| Patent | Date | Title | Inventor | Assignee |
| 1788035 | January 6, 1931 | Volume-control circuits | STEVENSON GEORGE H | BELL TELEPHONE LABOR INC |
| 1788031 | January 6, 1931 | Forming tool | PRITCHARD WILLIAM T | BELL TELEPHONE LABOR INC |
| 1788030 | January 6, 1931 | Telephone instrument | PENN JULIUS H | BELL TELEPHONE LABOR INC |
| 1788007 | January 6, 1931 | Telephone repeater system | ABBOTT HENRY H ; ENTZ FERDINAND S | AMERICAN TELEPHONE & TELEGRAPH BELL TELEPHONE LABOR INC |
| 1787606 | January 6, 1931 | Magnetic material | WHITE JOHN H ; LEGG VICTOR E | BELL TELEPHONE LABOR INC |
| 1788747 | January 13, 1931 | Telephone desk set | SCHARRINGHAUSEN WILLIAM H | BELL TELEPHONE LABOR INC |
| 1788736 | January 13, 1931 | Echo-suppressing and energy-limiting circuits | O'NEILL HENRY W | BELL TELEPHONE LABOR INC |
| 1788734 | January 13, 1931 | Regulator system | MORTON EDMUND R | BELL TELEPHONE LABOR INC |
| 1788733 | January 13, 1931 | Regulator system | MORTON EDMUND R | BELL TELEPHONE LABOR INC |
| 1788720 | January 13, 1931 | Polyphase vacuum-tube oscillator | JENSEN AXEL G | BELL TELEPHONE LABOR INC |
| 1788714 | January 13, 1931 | High and low frequency transmission circuits | GRIMLEY DONALD G | BELL TELEPHONE LABOR INC |
| 1788704 | January 13, 1931 | Telephone system | ORFEO CESAREO | BELL TELEPHONE LABOR INC |
| 1788560 | January 13, 1931 | Wave generating and modulating system | STEPHEN BLACK HAROLD | BELL TELEPHONE LABOR INC |
| 1788556 | January 13, 1931 | Ventilating device | WOOD ERNEST B. ; ELIASON OSCAR C. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1788538 | January 13, 1931 | Filtering circuits | NORTON EDWARD L | BELL TELEPHONE LABOR INC |
| 1788534 | January 13, 1931 | Acoustic phase-shifting device | MASON WARREN P | BELL TELEPHONE LABOR INC |
| 1788533 | January 13, 1931 | Frequency-control system | MARRISON WARREN A | BELL TELEPHONE LABOR INC |
| 1788532 | January 13, 1931 | Electron-tube circuit | LLEWELLYN FREDERICK B | BELL TELEPHONE LABOR INC |
| 1788528 | January 13, 1931 | Telephone system | KOECHLING CHARLES D | BELL TELEPHONE LABOR INC |
| 1788526 | January 13, 1931 | Artificial line | JOHNSON KENNETH S | BELL TELEPHONE LABOR INC |
| 1788521 | January 13, 1931 | Short-wave amplifying system | HEISING RAYMOND A | BELL TELEPHONE LABOR INC |
| 1788513 | January 13, 1931 | Signal and control system | FULTZ MILES E | BELL TELEPHONE LABOR INC |
| 1788487 | January 13, 1931 | Vibration transmission system | HARRISON HENRY C | BELL TELEPHONE LABOR INC |
| 1793254 | February 17, 1931 | Lock | SHANN OSCAR A | BELL TELEPHONE LABOR INC |
| 1792655 | February 17, 1931 | Sound reproducer | NORTON EDWARD L | BELL TELEPHONE LABOR INC |
| 1792650 | February 17, 1931 | Regulator system | MANDERFELD EMANUEL C | BELL TELEPHONE LABOR INC |
| 1792637 | February 17, 1931 | Vibration-transmission system | HARRISON HENRY C | BELL TELEPHONE LABOR INC |
| 1792630 | February 17, 1931 | Frequency-setting fork | CURTIS AUSTEN M | BELL TELEPHONE LABOR INC |
| 1792552 | February 17, 1931 | Method of forming contacts | SIEGMUND HUMPHREYS O | BELL TELEPHONE LABOR INC |
| 1792538 | February 17, 1931 | Telephone system | HERSEY RALPH E | BELL TELEPHONE LABOR INC |
| 1792536 | February 17, 1931 | Sound radiator | HARRISON HENRY C | BELL TELEPHONE LABOR INC |
| 1792512 | February 17, 1931 | Electromagnetic device | SIEGMUND HUMPHREYS O | BELL TELEPHONE LABOR INC |
| 1792497 | February 17, 1931 | Vibration-damping device | KELLER ARTHUR C ; NORTON EDWARD L | BELL TELEPHONE LABOR INC |
| 1792496 | February 17, 1931 | Switching device | HINSHAW FOSTER A | BELL TELEPHONE LABOR INC |
| 1792494 | February 17, 1931 | Phonographic needle | HARRISON HENRY C ; ANDERSON HARVEY A | BELL TELEPHONE LAB INCORPROATE |
| 1792483 | February 17, 1931 | Magnetic material | ELMEN GUSTAF W | BELL TELEPHONE LABOR INC |
| 1792479 | February 17, 1931 | Alarm system | BENNETT ARTHUR F ; MITCHELL CLIFFORD E | BELL TELEPHONE LABOR INC |
| 1793835 | February 24, 1931 | Electrical testing | EDMOND BRUCE | BELL TELEPHONE LABOR INC |
| 1793491 | February 24, 1931 | Current-limiting device | JONES THEODORE A ; PHELPS WALTER A | BELL TELEPHONE LABOR INC |
| 1795924 | March 10, 1931 | Relay circuits | BJORNSON BJORN G | BELL TELEPHONE LABOR INC |
| 1795914 | March 10, 1931 | Amplifying system | HORACE WHITTLE ; CHRISTOPHER ARTHUR J | BELL TELEPHONE LABOR INC |
| 1795874 | March 10, 1931 | Impedance element | MASON WARREN P | BELL TELEPHONE LABOR INC |
| 1795834 | March 10, 1931 | Testing system | ORFEO CESAREO | BELL TELEPHONE LABOR INC |
| 1795813 | March 10, 1931 | Telephone system | WILEY WHITNEY | BELL TELEPHONE LABOR INC |
| 1795656 | March 10, 1931 | Service-observing system | MASSONNEAU ROBERT F | BELL TELEPHONE LABOR INC |
| 1795652 | March 10, 1931 | Telegraph system | KINKEAD FULLERTON S | BELL TELEPHONE LABOR INC |
| 1795648 | March 10, 1931 | High-frequency-oscillation generator | FRILS HARALD T. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1795647 | March 10, 1931 | Method and apparatus for measuring acoustical impedances | FLANDERS PAUL B | BELL TELEPHONE LABOR INC |
| 1795640 | March 10, 1931 | Telephone-exchange system | COLLIS RAYMOND E | BELL TELEPHONE LABOR INC |
| 1795499 | March 10, 1931 | Magnetic device | MILLER DANIEL D ; PRATT EDWARD J | BELL TELEPHONE LABOR INC |
| 1795498 | March 10, 1931 | Electromagnetic device | MATHISON DAVID W | BELL TELEPHONE LABOR INC |
| 1795479 | March 10, 1931 | Wave-transmission system | DICKIESON ALTON C | BELL TELEPHONE LABOR INC |
| 1795474 | March 10, 1931 | Nonsinging amplifier | CECCARINI OLINDO O | BELL TELEPHONE LABOR INC |
| 1795439 | March 10, 1931 | Magnetic device | PRATT EDWARD J | BELL TELEPHONE LABOR INC |
| 1796965 | March 17, 1931 | Method of and means for signaling | RYAN FRANCIS M | BELL TELEPHONE LABOR INC |
| 1796931 | March 17, 1931 | Electrooptical transmission | IVES HERBERT E | BELL TELEPHONE LABOR INC |
| 1798243 | March 31, 1931 | Electrical transmission system | HORACE WHITTLE ; HILTON LINWOOD B | BELL TELEPHONE LABOR INC |
| 1799811 | April 7, 1931 | Signaling system | GOODERHAM JOHN W | BELL TELEPHONE LABOR INC |
| 1799810 | April 7, 1931 | Transmission circuits | FRY THORNTON C | BELL TELEPHONE LABOR INC |
| 1799800 | April 7, 1931 | Adjustable inductance coil | LANE CLARENCE E | BELL TELEPHONE LABOR INC |
| 1799799 | April 7, 1931 | Sound reproducer | JONES WARREN C | BELL TELEPHONE LABOR INC |
| 1799796 | April 7, 1931 | Telephone-exchange system | HENRY HOVLAND | BELL TELEPHONE LABOR INC |
| 1799795 | April 7, 1931 | Sound recording and reproducing | HORTON JOSEPH W | BELL TELEPHONE LABOR INC |
| 1799794 | April 7, 1931 | Artificial line | HORTON JR ARTHUR W | BELL TELEPHONE LABOR INC |
| 1799686 | April 7, 1931 | Impulse transmitter | GOFF HAROLD W | BELL TELEPHONE LABOR INC |
| 1799679 | April 7, 1931 | Telephone-exchange system | DUNHAM BERT G ; FAIRBAIRN RHYS A | BELL TELEPHONE LABOR INC AMERICAN TELEPHONE & TELEGRAPH |
| 1799654 | April 7, 1931 | Telephone-exchange system | STOKELY RAY L | BELL TELEPHONE LABOR INC |
| 1799653 | April 7, 1931 | Telephone system | STOKELY RAY L | BELL TELEPHONE LABOR INC |
| 1799651 | April 7, 1931 | Electrical switching apparatus | SIEGMUND HUMPHREYS O | BELL TELEPHONE LABOR INC |
| 1799627 | April 7, 1931 | Signal-interpolating system | KNOOP WILLIAM A | BELL TELEPHONE LABOR INC |
| 1799223 | April 7, 1931 | Party-line message-register system | FOWLER CLARENCE B | BELL TELEPHONE LABOR INC |
| 1799214 | April 7, 1931 | Submarine telegraph system | CLOKEY ALLISON A | BELL TELEPHONE LABOR INC |
| 1800394 | April 14, 1931 | Regulating device | LUNSFORD ROBERT L | BELL TELEPHONE LABOR INC |
| 1800372 | April 14, 1931 | Frequency-translating circuit | BLACK HAROLD S | BELL TELEPHONE LABOR INC |
| 1802118 | April 21, 1931 | Modulator and system of modulation | LLEWELLYN FREDERICK B | BELL TELEPHONE LABOR INC |
| 1802605 | April 28, 1931 | Method and machine for insulating cables | KEMP ARCHIE R | BELL TELEPHONE LABOR INC |
| 1804178 | May 5, 1931 | Regulator system | MORTON EDMUND R | BELL TELEPHONE LABOR INC |
| 1804169 | May 5, 1931 | Telephone exchange system | KNOWLTON ALFRED D ; EVERETT SAMUEL H | BELL TELEPHONE LABOR INC |
| 1804150 | May 5, 1931 | Telephone exchange system | COLLIS RAYMOND E | BELL TELEPHONE LABOR INC |
| 1804140 | May 5, 1931 | Clamping device | BARRY JOSEPH F | BELL TELEPHONE LABOR INC |
| 1804127 | May 5, 1931 | Speech transmission system | STRYKER NORMAN R | BELL TELEPHONE LABOR INC |
| 1804126 | May 5, 1931 | Regulator system | STOLLER HUGH M | BELL TELEPHONE LABOR INC |
| 1804087 | May 5, 1931 | Wave amplifying system | EDMOND BRUCE ; FRIIS HARALD T | BELL TELEPHONE LABOR INC |
| 1803700 | May 5, 1931 | Electrooptical system | FRANK GRAY | BELL TELEPHONE LABOR INC |
| 1805229 | May 12, 1931 | Variable electrical apparatus | ATWOOD GEORGE F | BELL TELEPHONE LABOR INC |
| 1804952 | May 12, 1931 | Wave signaling system | RETTENMEYER FRANCIS X | BELL TELEPHONE LABOR INC |
| 1804809 | May 12, 1931 | Vacuum cleaner apparatus | PRITCHARD WILLIAM T | BELL TELEPHONE LABOR INC |
| 1804786 | May 12, 1931 | Telephone testing system | WALTER KUHN | BELL TELEPHONE LABOR INC |
| 1804778 | May 12, 1931 | Telephone system | JOHNSON LEWIS H ; STOKELY RAY L | BELL TELEPHONE LABOR INC |
| 1804767 | May 12, 1931 | Telephone system | HAGUE ALFRED E | BELL TELEPHONE LABOR INC |
| 1804766 | May 12, 1931 | Telephone system | HAGUE ALFRED E | BELL TELEPHONE LABOR INC |
| 1804759 | May 12, 1931 | Acoustic device | FLANDERS PAUL B | BELL TELEPHONE LABOR INC |
| 1804746 | May 12, 1931 | High speed relay | CURTIS AUSTEN M | BELL TELEPHONE LABOR INC |
| 1804688 | May 12, 1931 | Acoustic device | HARRISON HENRY C | BELL TELEPHONE LABOR INC |
| 1804675 | May 12, 1931 | Signaling system | CLAUSEN HENRY P | BELL TELEPHONE LABOR INC |
| 1804409 | May 12, 1931 | Telephone exchange system | FOWLER CLARENCE B | BELL TELEPHONE LABOR INC |
| 1804408 | May 12, 1931 | Telephone exchange system | FOWLER CLARENCE B | BELL TELEPHONE LABOR INC |
| 1808577 | June 2, 1931 | Automatic telephone exchange system | SCUDDER FREDERICK J | BELL TELEPHONE LABOR INC |
| 1808540 | June 2, 1931 | Signaling system | GILBERT JOHN J | BELL TELEPHONE LABOR INC |
| 1808538 | June 2, 1931 | Transmission regulation | GABRIEL JOHN C ; HUBBARD FRANK A | BELL TELEPHONE LABOR INC |
| 1808527 | June 2, 1931 | Automatic telephone exchange system | CARPENTER WARREN W | BELL TELEPHONE LABOR INC |
| 1808520 | June 2, 1931 | Insulated conductor | BROBST DAVID R | BELL TELEPHONE LABOR INC |
| 1808137 | June 2, 1931 | Electrooptical system | HARTLEY RALPH V L | BELL TELEPHONE LABOR INC |
| 1809684 | June 9, 1931 | Sound recording and reproducing instrument | FLANDERS PAUL B | BELL TELEPHONE LABOR INC |
| 1809125 | June 9, 1931 | Telephone set mounting | HOYT FREDERICK A | BELL TELEPHONE LABOR INC |
| 1809124 | June 9, 1931 | Telephone exchange system | HENRY HOVLAND | BELL TELEPHONE LABOR INC |
| 1809095 | June 9, 1931 | Process of coating thermionic cathodes | WILSON JAMES R ; BLACKBURN CHARLES M | BELL TELEPHONE LABOR INC |
| 1809043 | June 9, 1931 | Printing telegraph system | KNOOP WILLIAM A | BELL TELEPHONE LABOR INC |
| 1809042 | June 9, 1931 | Magnet core | KELSALL GEORGE A | BELL TELEPHONE LABOR INC |
| 1809039 | June 9, 1931 | Telephone exchange system | HENRY HOVLAND | BELL TELEPHONE LABOR INC |
| 1809025 | June 9, 1931 | Electrical device | CRUSER VICTOR I | BELL TELEPHONE LABOR INC |
| 1808923 | June 9, 1931 | Synchronizing system | HORTON JOSEPH W | BELL TELEPHONE LABOR INC |
| 1808915 | June 9, 1931 | Repeater circuits | BJORNSON BJORN G | BELL TELEPHONE LABOR INC |
| 1808902 | June 9, 1931 | Telephone plug | MUELLER EMIL C | BELL TELEPHONE LABOR INC |
| 1810025 | June 16, 1931 | Transmission system | MATHES ROBERT C | BELL TELEPHONE LABOR INC |
| 1810024 | June 16, 1931 | Relay circuit | MATHES ROBERT C | BELL TELEPHONE LABOR INC |
| 1810016 | June 16, 1931 | Voice operated relay circuits | HOGG JOHN L | BELL TELEPHONE LABOR INC |
| 1810015 | June 16, 1931 | Transmission system | HOGG JOHN L | BELL TELEPHONE LABOR INC |
| 1810004 | June 16, 1931 | Voice operated relay circuits | BJORNSON BJORN G | BELL TELEPHONE LABOR INC |
| 1809887 | June 16, 1931 | Adapter | HOWARD BROADWELL | BELL TELEPHONE LABOR INC |
| 1809879 | June 16, 1931 | Circuits for electromagnetic devices | HORACE WHITTLE | BELL TELEPHONE LABOR INC |
| 1809841 | June 16, 1931 | Impulse transmitter | GOFF HAROLD W ; FORSBERG OSCAR F | BELL TELEPHONE LABOR INC |
| 1809832 | June 16, 1931 | Synchronous driving system | CURTIS AUSTEN M | BELL TELEPHONE LABOR INC |
| 1809828 | June 16, 1931 | Telephone transmission | BUCKLEY OLIVER E ; HARTLEY RALPH V L | BELL TELEPHONE LABOR INC |
| 1811369 | June 23, 1931 | Guard for guys and the like | ST JOHN EVERETT | BELL TELEPHONE LABOR INC |
| 1812828 | June 30, 1931 | Switch or commutating means | FRANK GRAY | BELL TELEPHONE LABOR INC |
| 1812635 | June 30, 1931 | Signaling system | KNOOP WILLIAM A | BELL TELEPHONE LABOR INC |
| 1812634 | June 30, 1931 | Sound reproducer | JONES WARREN C | BELL TELEPHONE LABOR INC |
| 1812630 | June 30, 1931 | Cable armoring | GILBERT JOHN J | BELL TELEPHONE LABOR INC |
| 1812625 | June 30, 1931 | Signal monitoring device | CURTIS AUSTEN M. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1812624 | June 30, 1931 | Telephone and telegraph signaling system | CUMMINGS GEORGE C | BELL TELEPHONE LABOR INC |
| 1812619 | June 30, 1931 | Sound reproduction | BLATTNER DAVID G | BELL TELEPHONE LABOR INC |
| 1812405 | June 30, 1931 | Electrooptical transmission system | IVES HERBERT E | BELL TELEPHONE LABOR INC |
| 1812402 | June 30, 1931 | Electrooptical transmission system | FRANK GRAY | BELL TELEPHONE LABOR INC |
| 1811963 | June 30, 1931 | Apparatus for reducing crosstalk currents | EUGENE PETERSON | BELL TELEPHONE LABOR INC |
| 1811947 | June 30, 1931 | Noise suppressing circuit | LEGG VICTOR E | BELL TELEPHONE LABOR INC |
| 1811941 | June 30, 1931 | Apparatus for reducing disturbing currents | KEITH CLYDE R | BELL TELEPHONE LABOR INC |
| 1811860 | June 30, 1931 | Regulator system | MORTON EDMUND R | BELL TELEPHONE LABOR INC |
| 1811858 | June 30, 1931 | Control system for transmission of signals | MILLER OHMER R | BELL TELEPHONE LABOR INC |
| 1811844 | June 30, 1931 | Automatic telephone exchange system | DIXON AMOS F | BELL TELEPHONE LABOR INC |
| 1811841 | June 30, 1931 | Sound reproducing system | BENJAMIN JOHN C | BELL TELEPHONE LABOR INC |
| 1811839 | June 30, 1931 | Sound transmission | ARNOLD HAROLD D | BELL TELEPHONE LABOR INC |
| 1813143 | July 7, 1931 | Aerial system | EDMOND BRUCE | BELL TELEPHONE LABOR INC |
| 1812964 | July 7, 1931 | Calling dial | LABAUGH JAMES M ; MILLER VICTOR F | AMERICAN TELEPHONE & TELEGRAPH BELL TELEPHONE LABOR INC |
| 1814269 | July 14, 1931 | Portable talking motion picture projector | TERRY ROY V | BELL TELEPHONE LABOR INC |
| 1814248 | July 14, 1931 | Telephone system | GOODERHAM JOHN W | BELL TELEPHONE LABOR INC |
| 1814238 | July 14, 1931 | Wave filter | BODE HENDRIK W | BELL TELEPHONE LABOR INC |
| 1813969 | July 14, 1931 | Method and apparatus for measuring small time intervals | SMITH EDMUND B | BELL TELEPHONE LABOR INC |
| 1813942 | July 14, 1931 | Frequency indicator | MALLES RALPH E | BELL TELEPHONE LABOR INC |
| 1813933 | July 14, 1931 | Wire support | KLEIN CHARLES H | BELL TELEPHONE LABOR INC |
| 1813923 | July 14, 1931 | Radio receiving system | HEISING RAYMOND A | BELL TELEPHONE LABOR INC |
| 1813913 | July 14, 1931 | Rotary distributor | CLOKEY ALLISON A ; KNOOP WILLIAM A | BELL TELEPHONE LABOR INC |
| 1815246 | July 21, 1931 | Radio direction finder | ENGLUND CARL R | BELL TELEPHONE LABOR INC |
| 1815212 | July 21, 1931 | Terminal connecter | OGG ROBERT A | BELL TELEPHONE LABOR INC |
| 1815203 | July 21, 1931 | Image producing system | IVES HERBERT E | BELL TELEPHONE LABOR INC |
| 1816634 | July 28, 1931 | Telephone exchange system | CARPENTER WARREN W ; DAHL JACK F ; DAVIS RICHARD C ; KITTREDGE LINUS E | BELL TELEPHONE LABOR INC AMERICAN TELEPHONE & TELEGRAPH |
| 1816621 | July 28, 1931 | Testing system | STACY LELAND J | BELL TELEPHONE LABOR INC |
| 1816613 | July 28, 1931 | Telephone system | POWELL ALBERT C | BELL TELEPHONE LABOR INC |
| 1816601 | July 28, 1931 | Electron discharge device | MCNEILL GEORGE A | BELL TELEPHONE LABOR INC |
| 1816599 | July 28, 1931 | Signal transmission system | MATHES ROBERT C | BELL TELEPHONE LABOR INC |
| 1816570 | July 28, 1931 | Testing system | DRAPER JOHN B | BELL TELEPHONE LABOR INC |
| 1816558 | July 28, 1931 | Electromagnetic device | ZUPA FRANK A | BELL TELEPHONE LABOR INC |
| 1817024 | August 4, 1931 | Retractile device | VOOS FREDERICK A | BELL TELEPHONE LABOR INC |
| 1816917 | August 4, 1931 | Apparatus for the measurement of acoustic impedance | SMYTHE EDWIN H ; FLANDERS PAUL B | BELL TELEPHONE LABOR INC |
| 1816913 | August 4, 1931 | Protective circuit for vacuum tubes | SCHELLENG JOHN C | BELL TELEPHONE LABOR INC |
| 1816906 | August 4, 1931 | Electromagnetic device | JONES WARREN C | BELL TELEPHONE LABOR INC |
| 1816905 | August 4, 1931 | Communication system | HORTON JOSEPH W | BELL TELEPHONE LABOR INC |
| 1816887 | August 4, 1931 | Automatic article selecting and distributing system | ADAMS EDGAR W | BELL TELEPHONE LABOR INC |
| 1816862 | August 4, 1931 | Amplifying system | MILLER ROBERT A | BELL TELEPHONE LABOR INC |
| 1816846 | August 4, 1931 | Electrical connecter | HARVEY WILLIAM H | BELL TELEPHONE LABOR INC |
| 1818568 | August 11, 1931 | Coin collection apparatus | MELICK JOHN M. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1818463 | August 11, 1931 | Zero correcting circuit | CURTIS AUSTEN M ; BURTON EVERETT T | BELL TELEPHONE LABOR INC |
| 1818156 | August 11, 1931 | Designation strip | O'NEILL HENRY W | BELL TELEPHONE LABOR INC |
| 1818099 | August 11, 1931 | Drive ring | RAPELJE JOHN A | BELL TELEPHONE LABOR INC |
| 1818070 | August 11, 1931 | Magnetic body | LATHROP HUBBEL | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1818064 | August 11, 1931 | Telephone system | JOHNSON HERBERT B ; VON NOSTITZ ERICH | BELL TELEPHONE LABOR INC AMERICAN TELEPHONE & TELEGRAPH |
| 1818018 | August 11, 1931 | Control circuit | STOCKER CLOSMAN P | BELL TELEPHONE LABOR INC |
| 1819675 | August 18, 1931 | Switch | CHAPLIN MERLE P | BELL TELEPHONE LABOR INC |
| 1819649 | August 18, 1931 | Wave transmission system | MATHES ROBERT C | BELL TELEPHONE LABOR INC |
| 1819648 | August 18, 1931 | Wave transmission system | MATHES ROBERT C | BELL TELEPHONE LABOR INC |
| 1819629 | August 18, 1931 | Vacuum tube circuits | WHITING DONALD F | BELL TELEPHONE LABOR INC |
| 1819614 | August 18, 1931 | Wave transmission system | MATHES ROBERT C | BELL TELEPHONE LABOR INC |
| 1821586 | September 1, 1931 | Acoustic device | SMYTHE EDWIN H | BELL TELEPHONE LABOR INC |
| 1821076 | September 1, 1931 | Amplifying system | EUGENE PETERSON | BELL TELEPHONE LABOR INC |
| 1822535 | September 8, 1931 | Mounting for vacuum tubes | LUM GEORGE R | BELL TELEPHONE LABOR INC |
| 1823739 | September 15, 1931 | System operating on a marginal current basis | HORTON JOSEPH W | BELL TELEPHONE LABOR INC |
| 1823688 | September 15, 1931 | Telephone exchange system | HENRY HOVLAND | BELL TELEPHONE LABOR INC |
| 1823679 | September 15, 1931 | Call charging telephone exchange system | BUSCH ALOYSIUS J | BELL TELEPHONE LABOR INC |
| 1823678 | September 15, 1931 | Cabinet for portable testing apparatus | BOWMAN HERMAN N | BELL TELEPHONE LABOR INC |
| 1823667 | September 15, 1931 | Trunking system | POWELL ALBERT C | BELL TELEPHONE LABOR INC |
| 1823664 | September 15, 1931 | Circuit maker and breaker | PASCARELLA ANTHONY J | BELL TELEPHONE LABOR INC |
| 1823659 | September 15, 1931 | Wave transmission system | MILLER ROBERT A | BELL TELEPHONE LABOR INC |
| 1823354 | September 15, 1931 | High speed submarine cable telegraph system | DOWD ANDREW D ; KERR MARK B ; LOCKE GEORGE A | BELL TELEPHONE LABOR INC |
| 1823323 | September 15, 1931 | Desk telephone set | HOPKINS IRVING L | BELL TELEPHONE LABOR INC |
| 1823120 | September 15, 1931 | Signaling and communication system | O'NEILL HENRY W. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1823091 | September 15, 1931 | Indicating and recording system | DAHL JACK F ; DAVIS RICHARD C | BELL TELEPHONE LABOR INC |
| 1823088 | September 15, 1931 | Submarine cable repeating system | CLOKEY ALLISON A ; BURTON EVERETT T | BELL TELEPHONE LABOR INC |
| 1823085 | September 15, 1931 | Show case | CAMPBELL THADDEUS C | BELL TELEPHONE LABOR INC |
| 1823040 | September 15, 1931 | Call charging telephone exchange system | HAGUE ALFRED E | BELL TELEPHONE LABOR INC |
| 1827297 | October 13, 1931 | Method of joining wires by means of sleeves | MOORE CHARLES R | BELL TELEPHONE LABOR INC |
| 1827196 | October 13, 1931 | Piezo electric oscillator | HEISING RAYMOND A | BELL TELEPHONE LABOR INC |
| 1827191 | October 13, 1931 | Shielded inductance | CASPER WILLIAM L | BELL TELEPHONE LABOR INC |
| 1828507 | October 20, 1931 | Circuit controlling device | MURPHY PAUL B | BELL TELEPHONE LABOR INC |
| 1828503 | October 20, 1931 | Means for reducing interference in electrical circuits | KAREL LUTOMIRSKI | BELL TELEPHONE LABOR INC |
| 1828498 | October 20, 1931 | Oscillation circuits | HEISING RAYMOND A | BELL TELEPHONE LABOR INC |
| 1828455 | October 20, 1931 | Telephone switchboard | CHARLES BORGMANN | BELL TELEPHONE LABOR INC |
| 1828454 | October 20, 1931 | Transmission network | BODE HENDRIK W | BELL TELEPHONE LABOR INC |
| 1830240 | November 3, 1931 | Electric wave limiting device | EUGENE PETERSON | BELL TELEPHONE LABOR INC |
| 1830226 | November 3, 1931 | Transoceanic cable circuit | DUDLEY HOMER W | BELL TELEPHONE LABOR INC |
| 1830220 | November 3, 1931 | Transmission control | BJORNSON BJORN G. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1830219 | November 3, 1931 | Transmission control | BJORNSON BJORN G | BELL TELEPHONE LABOR INC |
| 1830173 | November 3, 1931 | Radio television system | NELSON EDWARD L | BELL TELEPHONE LABOR INC |
| 1830163 | November 3, 1931 | Glow discharge lamp | FRANK GRAY | BELL TELEPHONE LABOR INC |
| 1829992 | November 3, 1931 | Rubber composition | KEMP ARCHIE R | BELL TELEPHONE LABOR INC |
| 1829806 | November 3, 1931 | Transmission control | MATHES ROBERT C | BELL TELEPHONE LABOR INC |
| 1829805 | November 3, 1931 | Transmission control | MATHES ROBERT C | BELL TELEPHONE LABOR INC |
| 1829803 | November 3, 1931 | Telephone system | KORN FRANKLIN A ; ENTZ FERDINAND S | BELL TELEPHONE LABOR INC |
| 1829801 | November 3, 1931 | Sound reproducing system | JONES WARREN C | BELL TELEPHONE LABOR INC |
| 1829783 | November 3, 1931 | Method and system of secret signaling | CHESNUT ROY W ; FISHER HAROLD J ; SANIAL ARTHUR J | BELL TELEPHONE LABOR INC |
| 1831400 | November 10, 1931 | Telephone system | STOKELY RAY L | BELL TELEPHONE LABOR INC |
| 1831398 | November 10, 1931 | Telephone system | SPENCER CHARLES G ; HALL JOHN A | BELL TELEPHONE LABOR INC |
| 1831391 | November 10, 1931 | Telephone desk set | PERREAULT GEORGE E | BELL TELEPHONE LABOR INC |
| 1831385 | November 10, 1931 | Telephone system | HAGUE ALFRED E | BELL TELEPHONE LABOR INC |
| 1831380 | November 10, 1931 | Telephone system | CURLEY THOMAS V | BELL TELEPHONE LABOR INC |
| 1831377 | November 10, 1931 | Telephone receiver | NELSON BLOUNT | BELL TELEPHONE LABOR INC |
| 1831375 | November 10, 1931 | Electrical tuning device | ADAMS JR WILLIAM J | BELL TELEPHONE LABOR INC |
| 1832466 | November 17, 1931 | Resistance unit | MEANS WINTHROP J | BELL TELEPHONE LABOR INC |
| 1832455 | November 17, 1931 | Submarine signaling conductor | GILBERT JOHN J | BELL TELEPHONE LABOR INC |
| 1832453 | November 17, 1931 | Telephone metering system | FOWLER CLARENCE B | BELL TELEPHONE LABOR INC |
| 1832447 | November 17, 1931 | Telephone system | CARPENTER WARREN W | BELL TELEPHONE LABOR INC |
| 1832431 | November 17, 1931 | Electric wave transmission system | SIVIAN LEON J | BELL TELEPHONE LABOR INC |
| 1832366 | November 17, 1931 | Electrical communication system | DUDLEY HOMER W | BELL TELEPHONE LABOR INC |
| 1832309 | November 17, 1931 | Synchronous telegraph system | KNOOP WILLIAM A | BELL TELEPHONE LABOR INC |
| 1832308 | November 17, 1931 | Interpolating system | KNOOP WILLIAM A | BELL TELEPHONE LABOR INC |
| 1832306 | November 17, 1931 | Semiautomatic telephone system | KILLE LINDLEY A | BELL TELEPHONE LABOR INC |
| 1832294 | November 17, 1931 | Sensitometer | GENT EDGAR W | BELL TELEPHONE LABOR INC |
| 1832293 | November 17, 1931 | Protective device | FRIEDL JR GEORGE ; ANTONIO GASTONGUAY | ELECTRICAL RES PROD INC BELL TELEPHONE LABOR INC |
| 1832292 | November 17, 1931 | Electrical circuits | FOWLER CLARENCE B | BELL TELEPHONE LABOR INC |
| 1832285 | November 17, 1931 | Mechanical coupling | ELMER LLOYD A | BELL TELEPHONE LABOR INC |
| 1832263 | November 17, 1931 | Telephone system | STRICKLER WALTER B. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1832261 | November 17, 1931 | Non-singing amplifier | STEVENSON GEORGE H | BELL TELEPHONE LABOR INC |
| 1832901 | November 24, 1931 | Measurement of mechanical impedance | HARRISON HENRY C | BELL TELEPHONE LABOR INC |
| 1832886 | November 24, 1931 | Current supply circuits | WHITING DONALD F | BELL TELEPHONE LABOR INC |
| 1834393 | December 1, 1931 | Telephone exchange system | FOWLER CLARENCE B | BELL TELEPHONE LABOR INC |
| 1835802 | December 8, 1931 | Signaling system | JOHN MESZAR | BELL TELEPHONE LABOR INC |
| 1835795 | December 8, 1931 | Sound transmission | MASON WARREN P | BELL TELEPHONE LABOR INC |
| 1835792 | December 8, 1931 | Headset | LUM GEORGE R | BELL TELEPHONE LABOR INC |
| 1835788 | December 8, 1931 | Electrical contact element | KNOOP WILLIAM A | BELL TELEPHONE LABOR INC |
| 1835771 | December 8, 1931 | Submarine signaling cable | GILBERT JOHN J | BELL TELEPHONE LABOR INC |
| 1835757 | December 8, 1931 | Connecting device | BURCHETT GEORGE W | BELL TELEPHONE LABOR INC |
| 1835743 | December 8, 1931 | Sound picture system | ASTER ALVIN K | BELL TELEPHONE LABOR INC |
| 1835737 | December 8, 1931 | Electrical recorder | WILLIAMS SAMUEL B | BELL TELEPHONE LABOR INC |
| 1836844 | December 15, 1931 | Distortion correction in transmission systems | FRY THORNTON C ; STRUIK DIRK J | BELL TELEPHONE LABOR INC |
| 1836841 | December 15, 1931 | Electric wave signaling system | DUDLEY HOMER W | BELL TELEPHONE LABOR INC |
| 1836829 | December 15, 1931 | Electric discharge device | WEINHART HOWARD W | BELL TELEPHONE LABOR INC |
| 1836824 | December 15, 1931 | Wave transmission with narrowed bands | STEINBERG JOHN C | BELL TELEPHONE LABOR INC |
| 1836816 | December 15, 1931 | Artificial larynx | RIESZ ROBERT R | BELL TELEPHONE LABOR INC |
| 1836810 | December 15, 1931 | Distortion correction in transmission systems | PERRY MASON WARREN | BELL TELEPHONE LABOR INC |
| 1836809 | December 15, 1931 | Distortion correction in transmission systems | MASON WARREN P | BELL TELEPHONE LABOR INC |
| 1836804 | December 15, 1931 | Carrier repeating system | KAHL WILLIAM E | BELL TELEPHONE LABOR INC |
| 1836594 | December 15, 1931 | Radio signaling system | HEISING RAYMOND A | BELL TELEPHONE LABOR INC |
| 1836582 | December 15, 1931 | Telephone exchange system | DUNHAM BERT G | BELL TELEPHONE LABOR INC |
| 1836574 | December 15, 1931 | Signal shaping amplifier | BURTON EVERETT T | BELL TELEPHONE LABOR INC |
| 1836569 | December 15, 1931 | Electric translating device | BENJAMIN JOHN C | BELL TELEPHONE LABOR INC |
| 1836558 | December 15, 1931 | Light valve | SHERMAN RUSSEL J | BELL TELEPHONE LABOR INC |
| 1836549 | December 15, 1931 | Telephone exchange system | PAINE ROBERT C | BELL TELEPHONE LABOR INC |
| 1838027 | December 22, 1931 | Electrodynamic device | CLARKE HARRY R | BELL TELEPHONE LABOR INC |
| 1837448 | December 22, 1931 | Signaling system | KROM MYRON E | BELL TELEPHONE LABOR INC |
| 1837413 | December 22, 1931 | Inductive coupling device | DOBSON ELLSWORTH S | BELL TELEPHONE LABOR INC |
| 1837385 | December 22, 1931 | Sound radiator | WEGEL RAYMOND L | BELL TELEPHONE LABOR INC |
| 1837373 | December 22, 1931 | Glass working machine | RONCI VICTOR L | BELL TELEPHONE LABOR INC |
| 1837365 | December 22, 1931 | Light sensitive device | IVES HERBERT E. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1837364 | December 22, 1931 | Signaling apparatus | IVES HERBERT E | BELL TELEPHONE LABOR INC |
| 1837355 | December 22, 1931 | Electrodeposition of alloys | BURNS ROBERT M ; WARNER CLARENCE W | BELL TELEPHONE LABOR INC |
| 1837238 | December 22, 1931 | Method of making electrical switch contacts | SIEGMUND HUMPHREYS O | BELL TELEPHONE LABOR INC |
| 1837237 | December 22, 1931 | Telegraph apparatus | SHANGLE AMOS H | BELL TELEPHONE LABOR INC |
| 1837229 | December 22, 1931 | Distortion correction in transmission systems | MASON WARREN P. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1837217 | December 22, 1931 | Telephone card holder | HAYWARD JOHN M | BELL TELEPHONE LABOR INC |
| 1837206 | December 22, 1931 | Call charging telephone exchange system | COLLIS RAYMOND E | BELL TELEPHONE LABOR INC |
| 1837202 | December 22, 1931 | Circuit breaker | BURTON EVERETT T | BELL TELEPHONE LABOR INC |
| 1840144 | January 5, 1932 | Coin collector | WHEELER CLYDE H | BELL TELEPHONE LABOR INC |
| 1840132 | January 5, 1932 | Telephone system | ROBERTS THOMAS H | BELL TELEPHONE LABOR INC |
| 1840116 | January 5, 1932 | Switch cleaning device | GRANT LINTON ; TOWNSEND JOHN R | BELL TELEPHONE LABOR INC |
| 1840112 | January 5, 1932 | Artificial larynx | LANE CLARENCE E | BELL TELEPHONE LABOR INC |
| 1840109 | January 5, 1932 | Telephone system | KOECHLING CHARLES D | BELL TELEPHONE LABOR INC |
| 1840097 | January 5, 1932 | Impulse circuit | HINRICHSEN EDWARD E | BELL TELEPHONE LABOR INC |
| 1840090 | January 5, 1932 | Impulse circuit | GOODRUM CHARLES L. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1840015 | January 5, 1932 | Transmission control circuit | BJORNSON BJORN G | BELL TELEPHONE LABOR INC |
| 1841197 | January 12, 1932 | Telephone alarm system | MASSONNEAU ROBERT F ; ROBERTS THOMAS H | BELL TELEPHONE LABOR INC |
| 1841142 | January 12, 1932 | Wave communication system | MATHES ROBERT C | BELL TELEPHONE LABOR INC |
| 1841125 | January 12, 1932 | Coin collection apparatus | HOYT FREDERICK A | BELL TELEPHONE LABOR INC |
| 1841123 | January 12, 1932 | Telephone exchange system | HENRY HOVLAND | BELL TELEPHONE LABOR INC |
| 1841120 | January 12, 1932 | Slow acting relay | HIBBARD FRANK H | BELL TELEPHONE LABOR INC |
| 1841101 | January 12, 1932 | Loud speaker | FLANDERS PAUL B ; HARRISON HENRY C | BELL TELEPHONE LABOR INC |
| 1841097 | January 12, 1932 | Heat treatment of conductors | ELMEN GUSTAF W | BELL TELEPHONE LABOR INC |
| 1841093 | January 12, 1932 | Call distributing system | DAHL JACK F | BELL TELEPHONE LABOR INC |
| 1841088 | January 12, 1932 | Electrical testing system and method | CHRISTOPHER ARTHUR J | BELL TELEPHONE LABOR INC |
| 1841085 | January 12, 1932 | Unidirectional antenna system | EDMOND BRUCE | BELL TELEPHONE LABOR INC |
| 1841084 | January 12, 1932 | Telephone system | BRAGG HERBERT E | BELL TELEPHONE LABOR INC |
| 1840580 | January 12, 1932 | Crystal-controlled oscillator | HEISING RAYMOND A | BELL TELEPHONE LABOR INC |
| 1840376 | January 12, 1932 | Telephone system | WILEY WHITNEY | BELL TELEPHONE LABOR INC |
| 1840368 | January 12, 1932 | Telephone exchange system | PORTER LESLIE F | BELL TELEPHONE LABOR INC |
| 1840364 | January 12, 1932 | Telephone dial system | IRVINE FRANK S | BELL TELEPHONE LABOR INC |
| 1840357 | January 12, 1932 | Panel dial switching system | GOODRUM CHARLES L | BELL TELEPHONE LABOR INC |
| 1840356 | January 12, 1932 | Automatic telephone exchange system | GOODRUM CHARLES L | BELL TELEPHONE LABOR INC |
| 1840352 | January 12, 1932 | Process of producing magnetic bodies | ELMEN GUSTAF W | BELL TELEPHONE LABOR INC |
| 1840350 | January 12, 1932 | Radiofrequency amplifier | CECCARINI OLINDO O | BELL TELEPHONE LABOR INC |
| 1841504 | January 19, 1932 | Circuit for electric discharge devices | STOLLER HUGH M | BELL TELEPHONE LABOR INC |
| 1841489 | January 19, 1932 | Oscillation generator | MARRISON WARREN A | BELL TELEPHONE LABOR INC |
| 1841486 | January 19, 1932 | Composite metallic strand | LEGG VICTOR E. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1841472 | January 19, 1932 | Inductance device | GIVEN FREDERICK J | BELL TELEPHONE LABOR INC |
| 1841405 | January 19, 1932 | Transmission control circuits | DUDLEY HOMER W | BELL TELEPHONE LABOR INC |
| 1841394 | January 19, 1932 | Circuit for space discharge devices | BACHELET ALBERT E | BELL TELEPHONE LABOR INC |
| 1844424 | February 9, 1932 | Long distance telephone transmission | HORTON JR ARTHUR W | BELL TELEPHONE LABOR INC |
| 1844423 | February 9, 1932 | Attenuation and volume control | MATHES ROBERT C | BELL TELEPHONE LABOR INC |
| 1844422 | February 9, 1932 | Cable telephony | MATHES ROBERT C ; HORTON JR ARTHUR W | BELL TELEPHONE LABOR INC |
| 1844147 | February 9, 1932 | Automatic and semiautomatic telephone system | CLARK EDGAR H | BELL TELEPHONE LABOR INC |
| 1844123 | February 9, 1932 | Acoustic diaphragm | HOLLAND NEWMAN H | BELL TELEPHONE LABOR INC |
| 1844121 | February 9, 1932 | Electromagnetic switching device | HIBBARD FRANK H | BELL TELEPHONE LABOR INC |
| 1844114 | February 9, 1932 | Manufacture of continuously loaded conductors | BISHOP WALTER M | BELL TELEPHONE LABOR INC |
| 1844111 | February 9, 1932 | Telephone exchange system | STOKELY RAY L | BELL TELEPHONE LABOR INC |
| 1844110 | February 9, 1932 | Determination of telephone quality | STEINBERG JOHN C | BELL TELEPHONE LABOR INC |
| 1844108 | February 9, 1932 | Method of manufacturing acoustic impedance elements | SMYTHE EDWIN H | BELL TELEPHONE LABOR INC |
| 1843910 | February 9, 1932 | Tuning fork | HOWARD BROADWELL | BELL TELEPHONE LABOR INC |
| 1845080 | February 16, 1932 | Studio for acoustic purposes | EYRING CARL F ; HANSON ROBERT L ; MACNAIR WALTER A | BELL TELEPHONE LABOR INC |
| 1845077 | February 16, 1932 | Drawing tool | DIXON JOHN B ; HAYFORD WALTER S | BELL TELEPHONE LABOR INC |
| 1845075 | February 16, 1932 | Insulation for electrical conductors | BOVING HENRIK | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1845042 | February 16, 1932 | Electron discharge device | BURNS ROBERT M | BELL TELEPHONE LABOR INC |
| 1845041 | February 16, 1932 | Insulated electric conductor | HENRIK BOVING | BELL TELEPHONE LABOR INC |
| 1845033 | February 16, 1932 | Switching mechanism | EWALD BAUSCH | BELL TELEPHONE LABOR INC |
| 1844973 | February 16, 1932 | Radio communication system | PORTS EARL G | BELL TELEPHONE LABOR INC |
| 1846883 | February 23, 1932 | Synchronous signaling system | LOCKE GEORGE A | BELL TELEPHONE LABOR INC |
| 1847702 | March 1, 1932 | Sound translating device | THURAS ALBERT L. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1847213 | March 1, 1932 | Selector switch | FOLKNER GEORGE W | BELL TELEPHONE LABOR INC |
| 1847191 | March 1, 1932 | Control system | MORTON EDMUND R. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1847174 | March 1, 1932 | Communication system | DIXON AMOS F | BELL TELEPHONE LABOR INC |
| 1847145 | March 1, 1932 | Amplifier system | TARR JAMES E | BELL TELEPHONE LABOR INC |
| 1847137 | March 1, 1932 | Communication system | ROBERTS JOHN G | BELL TELEPHONE LABOR INC |
| 1847113 | March 1, 1932 | Communication system | LEO KELLER | BELL TELEPHONE LABOR INC |
| 1847089 | March 1, 1932 | Radio receiving system | HEISING RAYMOND A ; FARRINGTON JOHN F | BELL TELEPHONE LABOR INC |
| 1847086 | March 1, 1932 | Fluid operated switch | GARGAN JOHN O | BELL TELEPHONE LABOR INC |
| 1848364 | March 8, 1932 | Treating magnetic materials | LEGG VICTOR E | BELL TELEPHONE LABOR INC |
| 1848212 | March 8, 1932 | Apparatus for producing artificial breathing | WATERMAN JOHN S. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1848187 | March 8, 1932 | Vacuum tube amplifier | MCNALLY JAMES O | BELL TELEPHONE LABOR INC |
| 1848181 | March 8, 1932 | Synchronous signaling system | KNOOP WILLIAM A | BELL TELEPHONE LABOR INC |
| 1848180 | March 8, 1932 | Synchronizing system | KNOOP WILLIAM A | BELL TELEPHONE LABOR INC |
| 1848174 | March 8, 1932 | Trouble recording system | IRVINE FRANK S ; ROBERTS THOMAS H | BELL TELEPHONE LABOR INC |
| 1848169 | March 8, 1932 | Adjustable inductance | GREENIDGE RALPH M C | BELL TELEPHONE LABOR INC |
| 1848143 | March 8, 1932 | Motion picture apparatus | HARRY PFANNENSTIEHL | BELL TELEPHONE LABOR INC |
| 1848134 | March 8, 1932 | Electrical testing system | LAMBERT KENNETH B | BELL TELEPHONE LABOR INC |
| 1849662 | March 15, 1932 | Telephone exchange system | DUNHAM BERT G | BELL TELEPHONE LABOR INC |
| 1849656 | March 15, 1932 | Transmission network | BENNETT WILLIAM R | BELL TELEPHONE LABOR INC |
| 1849646 | March 15, 1932 | Motor control system | STOLLER HUGH M | BELL TELEPHONE LABOR INC |
| 1849645 | March 15, 1932 | Motor structure | STOLLER HUGH M | BELL TELEPHONE LABOR INC |
| 1849643 | March 15, 1932 | Electric contact device | SEASONGOOD CHARLES C ; MCWILLIAMS CHARLES W | BELL TELEPHONE LABOR INC |
| 1849088 | March 15, 1932 | Telephone system | HENRY HOVLAND | BELL TELEPHONE LABOR INC |
| 1849087 | March 15, 1932 | Telephone system | HENRY HOVLAND | BELL TELEPHONE LABOR INC |
| 1850608 | March 22, 1932 | Telephone system | STOKELY RAY L | BELL TELEPHONE LABOR INC |
| 1850603 | March 22, 1932 | Telephone system | QUASS RALPH L | BELL TELEPHONE LABOR INC |
| 1850593 | March 22, 1932 | Transmission control | MATHES ROBERT C | BELL TELEPHONE LABOR INC |
| 1850579 | March 22, 1932 | Adjustable inductance coil | CASPER WILLIAM L | BELL TELEPHONE LABOR INC |
| 1851185 | March 29, 1932 | Telephone system | JOHNSON LEWIS H | BELL TELEPHONE LABOR INC |
| 1851173 | March 29, 1932 | Method of and apparatus for gauging articles | GILLESPIE HALL ARTHUR | BELL TELEPHONE LABOR INC |
| 1851139 | March 29, 1932 | Telephone system | STOKELY RAY L | BELL TELEPHONE LABOR INC |
| 1852795 | April 5, 1932 | Wave transmission device | WEGEL RAYMOND L | BELL TELEPHONE LABOR INC |
| 1852777 | April 5, 1932 | Cooling system | HOERNEL PAUL C ; SMITH JOHN W | BELL TELEPHONE LABOR INC |
| 1852774 | April 5, 1932 | Translating device | GENT EDGAR W ; POTTS LOUIS M | BELL TELEPHONE LABOR INC |
| 1852773 | April 5, 1932 | Electromagnetic signaling device | GENT EDGAR W | BELL TELEPHONE LABOR INC |
| 1852756 | April 5, 1932 | Lubricating device | PRITCHARD WILLIAM T | BELL TELEPHONE LABOR INC |
| 1852753 | April 5, 1932 | Telegraph signal distributing device | KNOOP WILLIAM A | BELL TELEPHONE LABOR INC |
| 1852747 | April 5, 1932 | Trunk circuit for telephone exchange systems | HAGUE ALFRED E | BELL TELEPHONE LABOR INC |
| 1852746 | April 5, 1932 | Telephone system | GOODERHAM JOHN W | BELL TELEPHONE LABOR INC |
| 1852743 | April 5, 1932 | Motion picture apparatus | ELMER LLOYD A | BELL TELEPHONE LABOR INC |
| 1852647 | April 5, 1932 | Telephone system | GOODERHAM JOHN W | BELL TELEPHONE LABOR INC |
| 1852605 | April 5, 1932 | Inductance device | CARLTON ROGER C. ; TINUS WILLIAM C. ; VADERSEN HERBERT | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1852584 | April 5, 1932 | Transmission control | MATHES ROBERT C | BELL TELEPHONE LABOR INC |
| 1852162 | April 5, 1932 | Refining of copper | HARRIS JAMES E ; WHITE JOHN H | BELL TELEPHONE LABOR INC |
| 1853974 | April 12, 1932 | Transmission system | HOGG JOHN L ; STEPHEN DOBA | BELL TELEPHONE LABOR INC |
| 1853969 | April 12, 1932 | Circuits for coupling lines of different impedances | GANZ ALBERT G | BELL TELEPHONE LABOR INC |
| 1853955 | April 12, 1932 | Acoustic device | BLATTNER DAVID G | BELL TELEPHONE LABOR INC |
| 1853929 | April 12, 1932 | Electric wave filter | RETTENMEYER FRANCIS X. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1853924 | April 12, 1932 | Process for insulating magnetic bodies | OWENS CONRAD D | BELL TELEPHONE LABOR INC |
| 1853912 | April 12, 1932 | Studio for acoustic purposes | MACNAIR WALTER A | BELL TELEPHONE LABOR INC |
| 1853022 | April 12, 1932 | Automatic dialing circuits | ALLISON SEWELL W ; MCCULLAGH WILLIS I | BELL TELEPHONE LABOR INC |
| 1854832 | April 19, 1932 | Support | ANTONIO GASTONGUAY ; GEORGE PULLER | BELL TELEPHONE LABOR INC |
| 1854830 | April 19, 1932 | Acoustic device | FLANDERS PAUL B | BELL TELEPHONE LABOR INC |
| 1854828 | April 19, 1932 | Transmission system | STEPHEN DOBA | BELL TELEPHONE LABOR INC |
| 1854824 | April 19, 1932 | Toroidal coil | BURGESS HARRY A | BELL TELEPHONE LABOR INC |
| 1854812 | April 19, 1932 | Telephone receiver | STEINBERG JOHN C | BELL TELEPHONE LABOR INC |
| 1854802 | April 19, 1932 | Telephone receiver | ARTHUR MEYER | BELL TELEPHONE LABOR INC |
| 1855616 | April 26, 1932 | Telephone system | STEVENS WILLIAM E | BELL TELEPHONE LABOR INC |
| 1855602 | April 26, 1932 | Crimping tool | SEBASTIAN KERNER | BELL TELEPHONE LABOR INC |
| 1855601 | April 26, 1932 | Impulse and wave transmission system | GORTON WILLIAM S | BELL TELEPHONE LABOR INC |
| 1855600 | April 26, 1932 | Sound translating device | CLARKE HARRY R | BELL TELEPHONE LABOR INC |
| 1855598 | April 26, 1932 | Telephone exchange system | CARPENTER WARREN W ; COLLIS RAYMOND E | BELL TELEPHONE LABOR INC |
| 1855593 | April 26, 1932 | Telephone system | WILEY WHITNEY | BELL TELEPHONE LABOR INC |
| 1855578 | April 26, 1932 | Heat treatment of signaling conductors | LEGG VICTOR E | BELL TELEPHONE LABOR INC |
| 1855576 | April 26, 1932 | Frequency translating system | KEITH CLYDE R | BELL TELEPHONE LABOR INC |
| 1855571 | April 26, 1932 | Continuously loaded conductor | WILLIAM FONDILLER | BELL TELEPHONE LABOR INC |
| 1856714 | May 3, 1932 | Printing telegraph radial switching system | LOCKE GEORGE A | BELL TELEPHONE LABOR INC |
| 1856654 | May 3, 1932 | Terminating circuit for two-way signaling systems | NEBEL CHARLES N | BELL TELEPHONE LABOR INC |
| 1856373 | May 3, 1932 | Power amplifier | BURTON EVERETT T | BELL TELEPHONE LABOR INC |
| 1858037 | May 10, 1932 | Zero correcting circuit | BURTON EVERETT T | BELL TELEPHONE LABOR INC |
| 1857848 | May 10, 1932 | Communication system | HINRICHSEN EDWARD E | BELL TELEPHONE LABOR INC |
| 1857830 | May 10, 1932 | Transmission circuit | HORACE WHITTLE | BELL TELEPHONE LABOR INC |
| 1857828 | May 10, 1932 | Circuit controlling device | WAGAR HAROLD N | BELL TELEPHONE LABOR INC |
| 1857827 | May 10, 1932 | Telephone system | STACY LELAND J | BELL TELEPHONE LABOR INC |
| 1857819 | May 10, 1932 | Radio telephone system | MERRIAM FRANCIS F | BELL TELEPHONE LABOR INC |
| 1857794 | May 10, 1932 | Wave energy translating diaphragm and method of mounting it | SMYTHE EDWIN H | BELL TELEPHONE LABOR INC |
| 1857201 | May 10, 1932 | Process for insulating magnetic bodies | HUBBEL LATHROP | BELL TELEPHONE LABOR INC |
| 1859030 | May 17, 1932 | Distortion correction in transmission systems | DUDLEY HOMER W | BELL TELEPHONE LABOR INC |
| 1859019 | May 17, 1932 | Voice-operated relay circuits | BJORNSON BJORN G | BELL TELEPHONE LABOR INC |
| 1858237 | May 17, 1932 | Submarine cable telegraph system | BURTON EVERETT T | BELL TELEPHONE LABOR INC |
| 1859941 | May 24, 1932 | Telephone exchange system | STOKELY RAY L | BELL TELEPHONE LABOR INC |
| 1859930 | May 24, 1932 | Recording and reproduction of intelligence | MILLER OHMER R | BELL TELEPHONE LABOR INC |
| 1859929 | May 24, 1932 | Telephone system | BURTON MCKIM JAMES | BELL TELEPHONE LABOR INC |
| 1859924 | May 24, 1932 | Call charging telephone exchange system | JOHNSON LEWIS H ; GIBSON EARL S | BELL TELEPHONE LABOR INC |
| 1859910 | May 24, 1932 | Telephone system | BOWNE LANGFORD J | BELL TELEPHONE LABOR INC |
| 1859901 | May 24, 1932 | Extruding apparatus | TREBES BRUNO M A | BELL TELEPHONE LABOR INC |
| 1859885 | May 24, 1932 | Telephone system | PAINE ROBERT C | BELL TELEPHONE LABOR INC |
| 1859565 | May 24, 1932 | Apparatus for reducing crosstalk currents | KEITH CLYDE R | BELL TELEPHONE LABOR INC |
| 1859470 | May 24, 1932 | Selector brush | ROAD RICHARD A ; REDMOND FREDERIC J | BELL TELEPHONE LABOR INC |
| 1859423 | May 24, 1932 | Sound recording | ARNOLD HAROLD D | BELL TELEPHONE LABOR INC |
| 1861221 | May 31, 1932 | Reeling device | MARTIN HAROLD T ; HOYT FREDERICK A | BELL TELEPHONE LABOR INC |
| 1861204 | May 31, 1932 | Electrical controller system | BERRIAN JOHN A | BELL TELEPHONE LABOR INC |
| 1861196 | May 31, 1932 | Telephone exchange system | STOKELY RAY L | BELL TELEPHONE LABOR INC |
| 1860936 | May 31, 1932 | Electrical control system | MARRISON WARREN A ; HORTON JOSEPH W | BELL TELEPHONE LABOR INC |
| 1860935 | May 31, 1932 | Speed and position control for television apparatus | MARRISON WARREN A ; HORTON JOSEPH W | BELL TELEPHONE LABOR INC |
| 1860556 | May 31, 1932 | Regulator | SOLE JOHN H | BELL TELEPHONE LABOR INC |
| 1860535 | May 31, 1932 | Impulse transmitter | GOFF HAROLD W | BELL TELEPHONE LABOR INC |
| 1860515 | May 31, 1932 | Telephone exchange system | STOKELY RAY L | BELL TELEPHONE LABOR INC |
| 1860503 | May 31, 1932 | Acoustic diaphragm | HOLLAND NEWMAN H | BELL TELEPHONE LABOR INC |
| 1860500 | May 31, 1932 | Conductor | GILBERT JOHN J | BELL TELEPHONE LABOR INC |
| 1863384 | June 14, 1932 | Lens tube adjusting appliance | TERRY ROY V | BELL TELEPHONE LABOR INC |
| 1863322 | June 14, 1932 | Telephone pay station | BENNETT ARTHUR F | BELL TELEPHONE LABOR INC |
| 1863309 | June 14, 1932 | Motion picture projector | KITTS HOWARD L | BELL TELEPHONE LABOR INC |
| 1863308 | June 14, 1932 | Receiver | JONES WARREN C | BELL TELEPHONE LABOR INC |
| 1863307 | June 14, 1932 | Telephone exchange system | HENRY HOVLAND | BELL TELEPHONE LABOR INC |
| 1863292 | June 14, 1932 | Telephone system | WILEY WHITNEY | BELL TELEPHONE LABOR INC |
| 1863141 | June 14, 1932 | Time of day announcing system | PRINCE WILLIAM B | BELL TELEPHONE LABOR INC |
| 1863139 | June 14, 1932 | Time of day announcing system | MASSONNEAU ROBERT F | BELL TELEPHONE LABOR INC |
| 1863137 | June 14, 1932 | Time of day announcing system | KECKLER CHARLES W ; HAGUE ALFRED E | BELL TELEPHONE LABOR INC |
| 1863089 | June 14, 1932 | Remote control system | FIELD JOSEPH C | BELL TELEPHONE LABOR INC |
| 1863086 | June 14, 1932 | Telephone system | CURLEY THOMAS V | BELL TELEPHONE LABOR INC |
| 1863073 | June 14, 1932 | Method and means for tensioning and for mounting diaphragms | SMYTHE EDWIN H | BELL TELEPHONE LABOR INC |
| 1863072 | June 14, 1932 | Sound radiator and method of making the same | SMYTHE EDWIN H | BELL TELEPHONE LABOR INC |
| 1863048 | June 14, 1932 | Method of joining wires | HAYFORD WALTER S | BELL TELEPHONE LABOR INC |
| 1862582 | June 14, 1932 | Acoustic device | SCHLENKER VESPER A | BELL TELEPHONE LABOR INC |
| 1862578 | June 14, 1932 | Signaling system | MURPHY PAUL B | BELL TELEPHONE LABOR INC |
| 1862571 | June 14, 1932 | Terminal strip | GOFF HAROLD W. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1862570 | June 14, 1932 | Electrical condenser | GIVEN FREDERICK J | BELL TELEPHONE LABOR INC |
| 1862569 | June 14, 1932 | Remote control device | GARGAN JOHN O | BELL TELEPHONE LABOR INC |
| 1862559 | June 14, 1932 | Workable magnetic compositions containing principally iron and cobalt | WHITE JOHN H ; WAHL CHARLES V | BELL TELEPHONE LABOR INC |
| 1862554 | June 14, 1932 | Acoustic device | SMYTHE EDWIN H | BELL TELEPHONE LABOR INC |
| 1862552 | June 14, 1932 | Acoustic device | SCHLENKER VESPER A | BELL TELEPHONE LABOR INC |
| 1862549 | June 14, 1932 | Telephone system | RALPH RAYMOND ; SCULLY WALTER J | BELL TELEPHONE LABOR INC |
| 1862532 | June 14, 1932 | Telephone system | FERGUSON JAMES G | BELL TELEPHONE LABOR INC |
| 1862519 | June 14, 1932 | Time of day announcing system | BROWN HORATIO G W | BELL TELEPHONE LABOR INC |
| 1864091 | June 21, 1932 | Method and means of testing photographic developers | PARSONS IAN H | BELL TELEPHONE LABOR INC |
| 1864082 | June 21, 1932 | Telephone exchange system | MASSONNEAU ROBERT F | BELL TELEPHONE LABOR INC |
| 1864076 | June 21, 1932 | High frequency furnace | LEGG VICTOR E | BELL TELEPHONE LABOR INC |
| 1864061 | June 21, 1932 | Telephone ringing system | GOODERHAM JOHN W | BELL TELEPHONE LABOR INC |
| 1865165 | June 28, 1932 | Transmission control circuits | BJORNSON BJORN G | BELL TELEPHONE LABOR INC |
| 1865028 | June 28, 1932 | Film editing system | MALLINA RUDOLPH F | BELL TELEPHONE LABOR INC |
| 1865004 | June 28, 1932 | Reference electrode | HARING HORACE E | BELL TELEPHONE LABOR INC |
| 1864981 | June 28, 1932 | Circuit breaker for motors in signaling systems | CURTIS AUSTEN M | BELL TELEPHONE LABOR INC |
| 1864963 | June 28, 1932 | Electron discharge device | HERBERT VADERSEN | BELL TELEPHONE LABOR INC |
| 1864955 | June 28, 1932 | Telephone exchange system | STOKELY RAY L | BELL TELEPHONE LABOR INC |
| 1864553 | June 28, 1932 | Telephone system | QUASS RALPH L | BELL TELEPHONE LABOR INC |
| 1864547 | June 28, 1932 | Incandescent lamp | MORTON EDMUND R ; STOLLER HUGH M | BELL TELEPHONE LABOR INC |
| 1864527 | June 28, 1932 | Measuring apparatus | CASTNER THEODORE G | BELL TELEPHONE LABOR INC |
| 1866403 | July 5, 1932 | Phonograph recorder and reproducer arm | ELMER LLOYD A | BELL TELEPHONE LABOR INC |
| 1866275 | July 5, 1932 | Speed regulator | STOLLER HUGH M. ; MORTON EDMUND R. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1866274 | July 5, 1932 | Resilient support | STOLLER HUGH M | BELL TELEPHONE LABOR INC |
| 1866261 | July 5, 1932 | Signal transmission system | KAREL LUTOMIRSKI | BELL TELEPHONE LABOR INC |
| 1866260 | July 5, 1932 | Telephone system | KING GERALD V ; BONOMI FELIX A | BELL TELEPHONE LABORATCRIES IN |
| 1865516 | July 5, 1932 | Glow discharge lamp | FRANK GRAY | BELL TELEPHONE LABOR INC |
| 1867380 | July 12, 1932 | Thermal switch | RUNYON BENJAMIN F | BELL TELEPHONE LABOR INC |
| 1867373 | July 12, 1932 | Motor control system | MORTON EDMUND R. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1867368 | July 12, 1932 | Testing system | MASSONNEAU ROBERT F | BELL TELEPHONE LABOR INC |
| 1867362 | July 12, 1932 | Insulation of metal bodies | HUBBEL LATHROP | BELL TELEPHONE LABOR INC |
| 1867356 | July 12, 1932 | Electric wave translating system | FRIIS HARALD T | BELL TELEPHONE LABOR INC |
| 1867350 | July 12, 1932 | Artificial larynx | BURCHETT GEORGE W | BELL TELEPHONE LABOR INC |
| 1867340 | July 12, 1932 | Electrooptical apparatus | WEINHART HOWARD W ; HOWARD HALL | BELL TELEPHONE LABOR INC |
| 1867333 | July 12, 1932 | Telegraph exchange switchboard | SMITH EDWARD M | BELL TELEPHONE LABOR INC |
| 1866925 | July 12, 1932 | Magnetic material | CIOFFI PAUL P | BELL TELEPHONE LABOR INC |
| 1866924 | July 12, 1932 | Magnetic material | CIOFFI PAUL P | BELL TELEPHONE LABOR INC |
| 1866604 | July 12, 1932 | Electrolytic device | SIEGMUND HUMPHREYS O | BELL TELEPHONE LABOR INC |
| 1866603 | July 12, 1932 | Acoustic device | SCHLENKER VESPER A | BELL TELEPHONE LABOR INC |
| 1866593 | July 12, 1932 | Call distributing system | DAHL JACK F ; CARPENTER WARREN W | BELL TELEPHONE LABOR INC |
| 1866592 | July 12, 1932 | Voice operated repeater circuit | BJORNSON BJORN G | BELL TELEPHONE LABOR INC |
| 1866533 | July 12, 1932 | Vacuum tube mounting | HORTON JOSEPH W | BELL TELEPHONE LABOR INC |
| 1868369 | July 19, 1932 | Sound recording machine | SAILLIARD JOHN H | BELL TELEPHONE LABOR INC |
| 1868366 | July 19, 1932 | Driving mechanism | HARRY PFANNENSTIEHL | BELL TELEPHONE LABOR INC |
| 1868326 | July 19, 1932 | Telephone system | KING GERALD V | BELL TELEPHONE LABOR INC |
| 1868321 | July 19, 1932 | Sound recording | HARRISON HENRY C | BELL TELEPHONE LABOR INC |
| 1868318 | July 19, 1932 | Adjustable inductance | GREENIDGE RALPH M C | BELL TELEPHONE LABOR INC |
| 1868315 | July 19, 1932 | Continuously loaded conductor | ELLIS WILLIAM C | BELL TELEPHONE LABOR INC |
| 1868309 | July 19, 1932 | Telephone system | CARPENTER WARREN W ; DAHL JACK F | BELL TELEPHONE LABOR INC |
| 1868296 | July 19, 1932 | Automatic telephone system | STOKELY RAY L | BELL TELEPHONE LABOR INC |
| 1868090 | July 19, 1932 | Sound translating device | BOSTWICK LEE G | BELL TELEPHONE LABOR INC |
| 1869200 | July 26, 1932 | Vacuum cleaner attachment | GRANT LINTON | BELL TELEPHONE LABOR INC |
| 1869194 | July 26, 1932 | Electrooptical system | FRANK GRAY | BELL TELEPHONE LABOR INC |
| 1869184 | July 26, 1932 | Jig | BURR GEORGE W | BELL TELEPHONE LABOR INC |
| 1869181 | July 26, 1932 | Electric test connecter | BECK WILLIAM O | BELL TELEPHONE LABOR INC |
| 1869178 | July 26, 1932 | Sound translating device | THURAS ALBERT L | BELL TELEPHONE LABOR INC |
| 1869175 | July 26, 1932 | Radio clock regulation | SPRAGUE CLARENCE A | BELL TELEPHONE LABOR INC |
| 1869171 | July 26, 1932 | Oscillation generator | ROSE CHARLES F P | BELL TELEPHONE LABOR INC |
| 1869160 | July 26, 1932 | Piezo-electric resonator | MARRISON WARREN A | BELL TELEPHONE LABOR INC |
| 1869884 | August 2, 1932 | Testing device | CURTIS AUSTEN M | BELL TELEPHONE LABOR INC |
| 1869870 | August 2, 1932 | Filtering circuits | STEVENSON GEORGE H | BELL TELEPHONE LABOR INC |
| 1869484 | August 2, 1932 | Peak voltage limiter | KNOOP WILLIAM A | BELL TELEPHONE LABOR INC |
| 1869466 | August 2, 1932 | Voltage limiter | COLE IRA E. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1871383 | August 9, 1932 | Sound reproducing system | MILLER ROBERT A | BELL TELEPHONE LABOR INC |
| 1871358 | August 9, 1932 | Electrical contact | BUTTERFIELD JOSEPH T | BELL TELEPHONE LABOR INC |
| 1871351 | August 9, 1932 | Entrance die for tanks | WENTZ JESSE F | BELL TELEPHONE LABOR INC |
| 1871347 | August 9, 1932 | Constant speed motor | STOLLER HUGH M | BELL TELEPHONE LABOR INC |
| 1871310 | August 9, 1932 | Communication system | ENTZ FERDINAND S ; BACHELET ALBERT E | BELL TELEPHONE LABOR INC |
| 1871266 | August 9, 1932 | Electrooptical transmission | FRANK GRAY | BELL TELEPHONE LABOR INC |
| 1871243 | August 9, 1932 | Acoustic device | SMYTHE EDWIN H | BELL TELEPHONE LABOR INC |
| 1870271 | August 9, 1932 | Acoustic device | WEGEL RAYMOND L | BELL TELEPHONE LABOR INC |
| 1873609 | August 23, 1932 | Synchronous signaling system | LOCKE GEORGE A | BELL TELEPHONE LABOR INC |
| 1873477 | August 23, 1932 | Coaxial conductor transmission line | QUARLES DONALD A | BELL TELEPHONE LABOR INC |
| 1873470 | August 23, 1932 | Cable armor | PEEK JR ROBERT L ; HIPPENSTEEL CLAUDE L | BELL TELEPHONE LABOR INC |
| 1873440 | August 23, 1932 | Rotary distributor phasing circuit | LOCKE GEORGE A | BELL TELEPHONE LABOR INC |
| 1873429 | August 23, 1932 | Electric current distributing device | KNOOP WILLIAM A | BELL TELEPHONE LABOR INC |
| 1873411 | August 23, 1932 | Television | IVES HERBERT E ; FRANK GRAY | BELL TELEPHONE LABOR INC |
| 1873387 | August 23, 1932 | Electrooptical system | FRANK GRAY | BELL TELEPHONE LABOR INC |
| 1873357 | August 23, 1932 | Grade clamp | ST JOHN EVERETT | BELL TELEPHONE LABOR INC |
| 1873346 | August 23, 1932 | Method of producing switching apparatus parts | SIEGMUND HUMPHREYS O | BELL TELEPHONE LABOR INC |
| 1873334 | August 23, 1932 | Power line carrier telephone system | SARROS JAMES D | BELL TELEPHONE LABOR INC |
| 1873283 | August 23, 1932 | Telegraph repeater | BURTON EVERETT T | BELL TELEPHONE LABOR INC |
| 1873268 | August 23, 1932 | Transmission control circuits | BJORNSON BJORN G | BELL TELEPHONE LABOR INC |
| 1873255 | August 23, 1932 | Power line carrier telephone system | ARNOLD HENRY B | BELL TELEPHONE LABOR INC |
| 1873250 | August 23, 1932 | Bushing extractor | ADOLPH WALTER J | BELL TELEPHONE LABOR INC |
| 1874550 | August 30, 1932 | Phonograph record turntable | KUHN JOHN J | BELL TELEPHONE LABOR INC |
| 1874537 | August 30, 1932 | Manufacture of vacuum devices | JAYCOX EDWIN K | BELL TELEPHONE LABOR INC |
| 1874492 | August 30, 1932 | Electric wave transmission | GANZ ALBERT G | BELL TELEPHONE LABOR INC |
| 1874380 | August 30, 1932 | Regulated motor system | STOLLER HUGH M - ; MORTON EDMUND R - | BELL TELEPHONE LABOR INC, United States of America (US) |
| 1874374 | August 30, 1932 | Control system | SOLE JOHN H | BELL TELEPHONE LABOR INC |
| 1874326 | August 30, 1932 | Sound muffler | MASON WARREN P | BELL TELEPHONE LABOR INC |
| 1874307 | August 30, 1932 | Insulating compound | KEMP ARCHIE R | BELL TELEPHONE LABOR INC |
| 1874281 | August 30, 1932 | Submarine signaling cable | GILBERT JOHN J | BELL TELEPHONE LABOR INC |
| 1874271 | August 30, 1932 | Resilient mounting for electrical devices | FRACKER EDWARD G | BELL TELEPHONE LABOR INC |
| 1874242 | August 30, 1932 | Inductance network | CHRISTOPHER ARTHUR J | BELL TELEPHONE LABOR INC |
| 1874238 | August 30, 1932 | Fuel control mechanism | CALLAHAN VINCENT T | BELL TELEPHONE LABOR INC |
| 1874200 | August 30, 1932 | Electrooptical image producing system | MANDERFELD EMANUEL C | BELL TELEPHONE LABOR INC |
| 1874191 | August 30, 1932 | Electrooptical system | IVES HERBERT E | BELL TELEPHONE LABOR INC |
| 1878936 | September 20, 1932 | Refining of copper | LEGG VICTOR E | BELL TELEPHONE LABOR INC |
| 1878147 | September 20, 1932 | Electrooptical transmission | IVES HERBERT E | BELL TELEPHONE LABOR INC |
| 1880942 | October 4, 1932 | Photographic recorder | ERICKSON ELMER C | BELL TELEPHONE LABOR INC |
| 1880889 | October 4, 1932 | Signal transmission system | DOBA JR STEPHEN | BELL TELEPHONE LABOR INC |
| 1880833 | October 4, 1932 | Electron discharge device | CRAWFORD ALLEN I | BELL TELEPHONE LABOR INC |
| 1880809 | October 4, 1932 | Spool for electrical devices | CLARKE HARRY R | BELL TELEPHONE LABOR INC |
| 1880806 | October 4, 1932 | Heat treating furnace | CIOFFI PAUL P | BELL TELEPHONE LABOR INC |
| 1880805 | October 4, 1932 | Inductive device | CHRISTOPHER ARTHUR J | BELL TELEPHONE LABOR INC |
| 1880800 | October 4, 1932 | Regulating circuits | CHESNUT ROY W ; TERRY DONALD M ; KANNENBERG WALTER F | BELL TELEPHONE LABOR INC |
| 1880764 | October 4, 1932 | Submarine signaling cable | BUCKLEY OLIVER E. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1880746 | October 4, 1932 | Lead alloy | BOUTON GEORGE M | BELL TELEPHONE LABOR INC |
| 1880715 | October 4, 1932 | Transmission control circuits | BJORNSON BJORN G ; HORTON JR ARTHUR W ; NORWINE ANDREW C | BELL TELEPHONE LABOR INC |
| 1880714 | October 4, 1932 | Gas-filled tube circuits | BJORNSON BJORN G | BELL TELEPHONE LABOR INC |
| 1880676 | October 4, 1932 | Circuit controlling device | BECK WILLIAM O | BELL TELEPHONE LABOR INC |
| 1880511 | October 4, 1932 | Mounting for electrical devices | ERNEST SORENY | BELL TELEPHONE LABOR INC |
| 1880425 | October 4, 1932 | Measurement of mechanical impedance | FLANDERS PAUL B | BELL TELEPHONE LABOR INC |
| 1880412 | October 4, 1932 | Transformer | BURTON EVERETT T | BELL TELEPHONE LABOR INC |
| 1882081 | October 11, 1932 | Insulating adhesive | KEMP ARCHIE R | BELL TELEPHONE LABOR INC |
| 1881891 | October 11, 1932 | Electric discharge device | OLPIN ALBERT R | BELL TELEPHONE LABOR INC |
| 1881829 | October 11, 1932 | Electromagnetic signaling device | MILLER DANIEL D | BELL TELEPHONE LABOR INC |
| 1881810 | October 11, 1932 | Frequency control method and system | MARRISON WARREN A | BELL TELEPHONE LABOR INC |
| 1881801 | October 11, 1932 | Two-way signaling system | MATHES ROBERT C | BELL TELEPHONE LABOR INC |
| 1881711 | October 11, 1932 | Magnetic structure | HUBBEL LATHROP | BELL TELEPHONE LABOR INC |
| 1881685 | October 11, 1932 | Phase shifting device | KNOOP WILLIAM A | BELL TELEPHONE LABOR INC |
| 1881684 | October 11, 1932 | Synchronizing system | KNOOP WILLIAM A | BELL TELEPHONE LABOR INC |
| 1881669 | October 11, 1932 | Telephone system | KING GERALD V ; BONOMI FELIX A | BELL TELEPHONE LABOR INC |
| 1881657 | October 11, 1932 | Circuit for electrical discharge apparatus | KEITH CLYDE R | BELL TELEPHONE LABOR INC |
| 1881642 | October 11, 1932 | Transmission control circuits | JONES HERBERT L ; VEAZIE EDMUND A | BELL TELEPHONE LABOR INC |
| 1881616 | October 11, 1932 | Electrooptical device | IVES HERBERT E | BELL TELEPHONE LABOR INC |
| 1881607 | October 11, 1932 | Printing telegraph system | HUNT ARTHUR E ; LANG WILMARTH Y | AMERICAN TELEPHONE & TELEGRAPH BELL TELEPHONE LABOR INC |
| 1881515 | October 11, 1932 | Transmission circuit | GRIMLEY DONALD G | BELL TELEPHONE LABOR INC |
| 1881503 | October 11, 1932 | Mounting frame for electrical apparatus | GRAHAM FRANK H | BELL TELEPHONE LABOR INC |
| 1881499 | October 11, 1932 | Submarine cable loading coil | GORTON WILLIAM S | BELL TELEPHONE LABOR INC |
| 1881483 | October 11, 1932 | Radio transmission systems | GILLETT GLENN D | BELL TELEPHONE LABOR INC |
| 1881481 | October 11, 1932 | Duplex telegraph system | GILBERT JOHN J | BELL TELEPHONE LABOR INC |
| 1881480 | October 11, 1932 | Continuously loaded communication conductor | GILBERT JOHN J | BELL TELEPHONE LABOR INC |
| 1881469 | October 11, 1932 | Motion picture projector | ANTONIO GASTONGUAY ; GEORGE PULLER | BELL TELEPHONE LABOR INC |
| 1881460 | October 11, 1932 | Relay | FRY JACOB R | BELL TELEPHONE LABOR INC |
| 1883291 | October 18, 1932 | Projection of stereoscopic pictures | IVES HERBERT E | BELL TELEPHONE LABOR INC |
| 1883163 | October 18, 1932 | Remote control device | VOORHIS JR FRANK VAN | BELL TELEPHONE LABOR INC |
| 1883158 | October 18, 1932 | Trunk circuit | ULRICH HORACE W | BELL TELEPHONE LABOR INC |
| 1883111 | October 18, 1932 | Piezo-electric crystal mounting | THURSTON GEORGE M | BELL TELEPHONE LABOR INC |
| 1883098 | October 18, 1932 | Electrical resistance device | TEMPLETON BRYCE O | BELL TELEPHONE LABOR INC |
| 1883043 | October 18, 1932 | Pouch | ERNEST SORENY | BELL TELEPHONE LABOR INC |
| 1882994 | October 18, 1932 | Electron discharge device | PAUL SCHWERIN | BELL TELEPHONE LABOR INC |
| 1882974 | October 18, 1932 | Acoustic device | SCHLENKER VESPER A | BELL TELEPHONE LABOR INC |
| 1882936 | October 18, 1932 | Electron discharge device | RONCI VICTOR L | BELL TELEPHONE LABOR INC |
| 1882893 | October 18, 1932 | Sound picture camera | POTTS LOUIS M | BELL TELEPHONE LABOR INC |
| 1882885 | October 18, 1932 | Holder for crystal resonators | POLKINGHORN FRANK A | BELL TELEPHONE LABOR INC |
| 1882866 | October 18, 1932 | Signaling system | MATHES ROBERT C | BELL TELEPHONE LABOR INC |
| 1882854 | October 18, 1932 | Mounting frame for electrical apparatus | MEAD EDWARD D | BELL TELEPHONE LABOR INC |
| 1882851 | October 18, 1932 | Telephone system | MATTHIES WILLIAM H | BELL TELEPHONE LABOR INC |
| 1882850 | October 18, 1932 | Frequency producer | MARRISON WARREN A | BELL TELEPHONE LABOR INC |
| 1882849 | October 18, 1932 | Frequency control system | MARRISON WARREN A | BELL TELEPHONE LABOR INC |
| 1882829 | October 18, 1932 | Relief picture viewing screen | HOWARD HALL | BELL TELEPHONE LABOR INC |
| 1882753 | October 18, 1932 | Telephone system | BOWNE LANGFORD J | BELL TELEPHONE LABOR INC |
| 1884845 | October 25, 1932 | Magnetic amplifier | EUGENE PETERSON | BELL TELEPHONE LABOR INC |
| 1884844 | October 25, 1932 | Magnetic wave-amplifying repeater | EUGENE PETERSON | BELL TELEPHONE LABOR INC |
| 1884697 | October 25, 1932 | Long distance telephone system | HORTON JR ARTHUR W | BELL TELEPHONE LABOR INC |
| 1884675 | October 25, 1932 | Electric wave transmission system | HEISING RAYMOND A | BELL TELEPHONE LABOR INC |
| 1884582 | October 25, 1932 | Vacuum tube socket | CRAWFORD ALLEN I | BELL TELEPHONE LABOR INC |
| 1884567 | October 25, 1932 | Telegraph exchange system | CATOGGE JOSEPH J | BELL TELEPHONE LABOR INC |
| 1885728 | November 1, 1932 | Harmonic generating and selecting system | KEITH CLYDE R | BELL TELEPHONE LABOR INC |
| 1885151 | November 1, 1932 | Directive antenna system | STERBA ERNEST J | BELL TELEPHONE LABOR INC |
| 1888227 | November 22, 1932 | Volume control system | HORTON JR ARTHUR W | BELL TELEPHONE LABOR INC |
| 1889576 | November 29, 1932 | Apparatus to enable the blind to read | SNOOK HOMER C | BELL TELEPHONE LABOR INC |
| 1890904 | December 13, 1932 | Translating device | GENT EDGAR W | BELL TELEPHONE LABOR INC |
| 1890523 | December 13, 1932 | Telephone system | MARSHALL TOLA A | BELL TELEPHONE LABOR INC |
| 1890488 | December 13, 1932 | Remote control system | ARNOLD HENRY B | BELL TELEPHONE LABOR INC |
| 1890454 | December 13, 1932 | Automatic gain control | EDMOND BRUCE | BELL TELEPHONE LABOR INC |
| 1891241 | December 20, 1932 | Sound picture system | HARRY PFANNENSTIEHL | BELL TELEPHONE LABOR INC |
| 1892284 | December 27, 1932 | Voice operated circuit | MATHES ROBERT C | BELL TELEPHONE LABOR INC |
| 1892279 | December 27, 1932 | Communication cable | KEMP ARCHIE R | BELL TELEPHONE LABOR INC |
| 1892253 | December 27, 1932 | Directive antenna system | SCHELLENG JOHN C | BELL TELEPHONE LABOR INC |
| 1893302 | January 3, 1933 | Method of and means for controlling electric wave amplifiers | EUGENE PETERSON | BELL TELEPHONE LABOR INC |
| 1893031 | January 3, 1933 | Control circuits for space discharge devices | LLEWELLYN FREDERICK B | BELL TELEPHONE LABOR INC |
| 1894023 | January 10, 1933 | Circuits for photo-electric cells | DAWSON WILFRID L | BELL TELEPHONE LABOR INC |
| 1894022 | January 10, 1933 | Container | CRUSER VICTOR I | BELL TELEPHONE LABOR INC |
| 1894016 | January 10, 1933 | Telephone desk set | NELSON BLOUNT | BELL TELEPHONE LABOR INC |
| 1894823 | January 17, 1933 | Coin receptacle | HOYT FREDERICK A | BELL TELEPHONE LABOR INC |
| 1895828 | January 31, 1933 | Wire splicing machine | INWAGEN JR CHARLES L VAN | BELL TELEPHONE LABOR INC |
| 1895760 | January 31, 1933 | Fluid-treating apparatus | HUNT FRANKLIN L | BELL TELEPHONE LABOR INC |
| 1895757 | January 31, 1933 | Translating device | GENT EDGAR W | BELL TELEPHONE LABOR INC |
| 1895466 | January 31, 1933 | Hinge | KUNTZ FRANK A | BELL TELEPHONE LABOR INC |
| 1895461 | January 31, 1933 | Combined radio telephone and telegraph system | HEISING RAYMOND A | BELL TELEPHONE LABOR INC |
| 1895441 | January 31, 1933 | Sound translating device | BOSTWICK LEE G | BELL TELEPHONE LABOR INC |
| 1896785 | February 7, 1933 | Modulating device | OHL RUSSELL S | BELL TELEPHONE LABOR INC |
| 1896781 | February 7, 1933 | Constant frequency oscillator | LLEWELLYN FREDERICK B | BELL TELEPHONE LABOR INC |
| 1896780 | February 7, 1933 | Modulating device | LLEWELLYN FREDERICK B | BELL TELEPHONE LABOR INC |
| 1896767 | February 7, 1933 | Signaling system | BUCKLEY OLIVER E | BELL TELEPHONE LABOR INC |
| 1896762 | February 7, 1933 | Coil | HORACE WHITTLE | BELL TELEPHONE LABOR INC |
| 1896757 | February 7, 1933 | Telephone exchange system | STRICKLER WALTER B | BELL TELEPHONE LABOR INC |
| 1896513 | February 7, 1933 | Piezo-electric crystal | HOVGAARD OLE M | BELL TELEPHONE LABOR INC |
| 1896510 | February 7, 1933 | Adjustable inductance | GIVEN FREDERICK J | BELL TELEPHONE LABOR INC |
| 1896487 | February 7, 1933 | Calling circuit | GIBSON ROBERT D | BELL TELEPHONE LABOR INC |
| 1896480 | February 7, 1933 | Balanced inductance device | CHRISTOPHER ARTHUR J | BELL TELEPHONE LABOR INC |
| 1896478 | February 7, 1933 | Treating wood and preventing corrosion of cables | BURNS ROBERT M | BELL TELEPHONE LABOR INC |
| 1896473 | February 7, 1933 | Article of metallic compositions or alloys of lead | TOWNSEND JOHN R | BELL TELEPHONE LABOR INC |
| 1896464 | February 7, 1933 | Electron discharge device | RONCI VICTOR L | BELL TELEPHONE LABOR INC |
| 1896065 | February 7, 1933 | Selective circuit for superheterodyne radioreceivers | BUDENBOM HORACE T | BELL TELEPHONE LABOR INC |
| 1897639 | February 14, 1933 | Transmission network | KREER JR JOHN G | BELL TELEPHONE LABOR INC |
| 1897606 | February 14, 1933 | Hand welding machine | COLE IRA E ; MAY DAVID T ; WELLER ANTHONY A | BELL TELEPHONE LABOR INC |
| 1897083 | February 14, 1933 | Telephone exchange system | STRICKLER WALTER B | BELL TELEPHONE LABOR INC |
| 1897069 | February 14, 1933 | Telephone exchange system | NEWSOM JAMES B | BELL TELEPHONE LABOR INC |
| 1897068 | February 14, 1933 | Constant speed motor | MORTON EDMUND R | BELL TELEPHONE LABOR INC |
| 1897045 | February 14, 1933 | Relay | FRY JACOB R | BELL TELEPHONE LABOR INC |
| 1897040 | February 14, 1933 | Inductive device | CHRISTOPHER ARTHUR J | BELL TELEPHONE LABOR INC |
| 1899410 | February 28, 1933 | Directive antenna system | EDMOND BRUCE | BELL TELEPHONE LABOR INC |
| 1899163 | February 28, 1933 | Piezo-electric crystal | MARRISON WARREN A. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1901449 | March 14, 1933 | Multicontact switch | HOGE JOSEPH F D | BELL TELEPHONE LABOR INC |
| 1901443 | March 14, 1933 | Signaling device | GARVIN JOHN S | BELL TELEPHONE LABOR INC |
| 1901433 | March 14, 1933 | Artificial larynk | BURCHETT GEORGE W | BELL TELEPHONE LABOR INC |
| 1901403 | March 14, 1933 | Telephone system | MURPHY PAUL B | BELL TELEPHONE LABOR INC |
| 1901400 | March 14, 1933 | Harmonic analyzer | MARRISON WARREN A | BELL TELEPHONE LABOR INC |
| 1901958 | March 21, 1933 | Substation circuit | GOODERHAM JOHN W | BELL TELEPHONE LABOR INC |
| 1901947 | March 21, 1933 | Supporting device | BESCHERER EDWIN A | BELL TELEPHONE LABOR INC |
| 1901944 | March 21, 1933 | Telephone system | ALLEN LAWRENCE H | BELL TELEPHONE LABOR INC |
| 1901938 | March 21, 1933 | Method of and means for tapping a conductor | TINUS WILLIAM C | BELL TELEPHONE LABOR INC |
| 1901929 | March 21, 1933 | Voltage limiting system | EUGENE PETERSON | BELL TELEPHONE LABOR INC |
| 1901921 | March 21, 1933 | Electrical meter | MEANS WINTHROP J | BELL TELEPHONE LABOR INC |
| 1901901 | March 21, 1933 | Testing of electrical contacts | DIXON JOHN B ; HONAN EDWARD M | BELL TELEPHONE LABOR INC |
| 1901898 | March 21, 1933 | Sound translating device | CLARKE HARRY R. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1904618 | April 18, 1933 | Telegraph system | BURTON EVERETT T | BELL TELEPHONE LABOR INC |
| 1904598 | April 18, 1933 | Testing system | ANDERSON FRITHIOF B | BELL TELEPHONE LABOR INC |
| 1904569 | April 18, 1933 | Protective device | TEBO JULIAN D | BELL TELEPHONE LABOR INC |
| 1904490 | April 18, 1933 | Turntable for phonographs | MALLINA RUDOLPH F | BELL TELEPHONE LABOR INC |
| 1904278 | April 18, 1933 | Message register circuit for telegraph exchanges | DICKINSON ALLAN B | BELL TELEPHONE LABOR INC |
| 1904272 | April 18, 1933 | Vacuum tube amplifier circuit | METER COUSINS VAN | BELL TELEPHONE LABOR INC |
| 1904271 | April 18, 1933 | Submarine cable anchorage | CHASE CHARLES A | BELL TELEPHONE LABOR INC |
| 1904252 | April 18, 1933 | Telephone system | ROBB THEODORE D | BELL TELEPHONE LABOR INC |
| 1904233 | April 18, 1933 | Process for producing magnetic bodies | HOLLINGSWORTH LOWELL M | BELL TELEPHONE LABOR INC |
| 1904156 | April 18, 1933 | Pneumatic sound reproducer | MALLINA RUDOLPH F | BELL TELEPHONE LABOR INC |
| 1904017 | April 18, 1933 | Telephone system | ULRICH HORACE W | BELL TELEPHONE LABOR INC |
| 1904000 | April 18, 1933 | Reeling device | HOYT FREDERICK A | BELL TELEPHONE LABOR INC |
| 1903999 | April 18, 1933 | Regulating system | HOLDEN WILLIAM H T ; JUTSON ROBERT P | AMERICAN TELEPHONE & TELEGRAPH BELL TELEPHONE LABOR INC |
| 1903998 | April 18, 1933 | Telephone exchange system | HARPER ROBERT W | BELL TELEPHONE LABOR INC |
| 1903992 | April 18, 1933 | Submarine cable loading coil | GILBERT JOHN J | BELL TELEPHONE LABOR INC |
| 1903981 | April 18, 1933 | Motion picture film | COFFMAN JOE W | BELL TELEPHONE LABOR INC |
| 1903976 | April 18, 1933 | Process of making concrete | BURNS ROBERT M | BELL TELEPHONE LABOR INC |
| 1903975 | April 18, 1933 | Submarine signaling cable | BUCKLEY OLIVER E | BELL TELEPHONE LABOR INC |
| 1905792 | April 25, 1933 | Transmission system | EDMOND BRUCE | BELL TELEPHONE LABOR INC |
| 1905761 | April 25, 1933 | Cable suspension | ST JOHN EVERETT ; MILLER STANLEY C | BELL TELEPHONE LABOR INC |
| 1905723 | April 25, 1933 | Vibration damping device | LANDSMAN WESLEY E | BELL TELEPHONE LABOR INC |
| 1905716 | April 25, 1933 | Making stereoscopic parallax panoramagrams from pseudoscopic parallax panoramagrams | IVES HERBERT E | BELL TELEPHONE LABOR INC |
| 1905714 | April 25, 1933 | Signaling system | HORTON JOSEPH W | BELL TELEPHONE LABOR INC |
| 1905711 | April 25, 1933 | Telephone system | HINRICHSEN EDWARD E | BELL TELEPHONE LABOR INC |
| 1905704 | April 25, 1933 | Acoustic device | HARRISON HENRY C | BELL TELEPHONE LABOR INC |
| 1905669 | April 25, 1933 | Vibration translating device | YENZER GEORGE R | BELL TELEPHONE LABOR INC |
| 1905662 | April 25, 1933 | Telephone system | ULRICH HORACE W | BELL TELEPHONE LABOR INC |
| 1907147 | May 2, 1933 | Transmission circuits | DUDLEY HOMER W | BELL TELEPHONE LABOR INC |
| 1907132 | May 2, 1933 | Constant frequency system | THURSTON GEORGE M | BELL TELEPHONE LABOR INC |
| 1907123 | May 2, 1933 | Electron discharge device | RONCI VICTOR L | BELL TELEPHONE LABOR INC |
| 1907114 | May 2, 1933 | Electrooptical system | IVES HERBERT E | BELL TELEPHONE LABOR INC |
| 1907105 | May 2, 1933 | Magnetic testing | HAWORTH FRANCIS E | BELL TELEPHONE LABOR INC |
| 1906973 | May 2, 1933 | Photographic copying system | KINGSBURY EDWIN F | BELL TELEPHONE LABOR INC |
| 1908366 | May 9, 1933 | Electrical discharge device | FOSTER KINGSBURY EDWIN | BELL TELEPHONE LABOR INC |
| 1908346 | May 9, 1933 | Gauge | HAMPTON LEON N | BELL TELEPHONE LABOR INC |
| 1907843 | May 9, 1933 | Method of manufacturing transmitter carbon | LOWRY HOMER H | BELL TELEPHONE LABOR INC |
| 1907745 | May 9, 1933 | Indicating device | CURTIS AUSTEN M | BELL TELEPHONE LABOR INC |
| 1907723 | May 9, 1933 | Sound reproducing device | BOSTWICK LEE G | BELL TELEPHONE LABOR INC |
| 1907712 | May 9, 1933 | Acoustic device | BEDELL EUAL H | BELL TELEPHONE LABOR INC |
| 1907704 | May 9, 1933 | Method of adjusting translating devices | ANDERSON WILLIAM H | BELL TELEPHONE LABOR INC |
| 1907427 | May 9, 1933 | Piezo-electric crystal | MARRISON WARREN A. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1907426 | May 9, 1933 | Piezo-electric crystal | MARRISON WARREN A. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1907425 | May 9, 1933 | Piezo electric resonator | MARRISON WARREN A | BELL TELEPHONE LABOR INC |
| 1909843 | May 16, 1933 | Communicating system | SQUIRE EDMUND M | BELL TELEPHONE LABOR INC |
| 1909842 | May 16, 1933 | Method and means for measuring direct capacity | SKELLETT ALBERT M | BELL TELEPHONE LABOR INC |
| 1909838 | May 16, 1933 | Telegraph exchange system | LANE CUTHBERT C | BELL TELEPHONE LABOR INC |
| 1909812 | May 16, 1933 | Monitoring system | COOKE LEIGHTON B | BELL TELEPHONE LABOR INC |
| 1909810 | May 16, 1933 | Telephony | HOWARD CHRISTENSEN | BELL TELEPHONE LABOR INC |
| 1909438 | May 16, 1933 | Signaling system | WADSWORTH PAUL W | BELL TELEPHONE LABOR INC |
| 1909419 | May 16, 1933 | Telephone system | OAKES WILLIAM C | BELL TELEPHONE LABOR INC |
| 1909375 | May 16, 1933 | Acoustic device | MULLER GEORGE G | BELL TELEPHONE LABOR INC |
| 1909370 | May 16, 1933 | Sound recording and reproducing system | MALLINA RUDOLPH F | BELL TELEPHONE LABOR INC |
| 1909367 | May 16, 1933 | Heat treating loaded conductors | LEGG VICTOR E | BELL TELEPHONE LABOR INC |
| 1910982 | May 23, 1933 | Stroboscopic system | HOWARD BROADWELL | BELL TELEPHONE LABOR INC |
| 1910981 | May 23, 1933 | Acoustic dampening device | BESCHERER EDWIN A | BELL TELEPHONE LABOR INC |
| 1910980 | May 23, 1933 | Transmitter filling machine | BENNETT ARTHUR F | BELL TELEPHONE LABOR INC |
| 1910978 | May 23, 1933 | Coin collection apparatus | ALLISON MALCOLM G | BELL TELEPHONE LABOR INC |
| 1910977 | May 23, 1933 | Wave transmission system | WEIS JR CHARLES L | BELL TELEPHONE LABOR INC |
| 1910972 | May 23, 1933 | Telephone system | STOKELY RAY L | BELL TELEPHONE LABOR INC |
| 1910966 | May 23, 1933 | Artificial larynx | RIESZ ROBERT R ; BURCHETT GEORGE W | BELL TELEPHONE LABOR INC |
| 1910960 | May 23, 1933 | Power line carrier current system | NEBEL CHARLES N | BELL TELEPHONE LABOR INC |
| 1910957 | May 23, 1933 | Reactive element having stable temperature-reactance characteristics | LLEWELLYN FREDERICK B | BELL TELEPHONE LABOR INC |
| 1910254 | May 23, 1933 | Sound recording | KELLER ARTHUR C | BELL TELEPHONE LABOR INC |
| 1910179 | May 23, 1933 | Sound picture projector | HARRY PFANNENSTIEHL | BELL TELEPHONE LABOR INC |
| 1910165 | May 23, 1933 | Deep sea cable terminal | HORTON JR ARTHUR W | BELL TELEPHONE LABOR INC |
| 1910147 | May 23, 1933 | Antenna system | EDMOND BRUCE | BELL TELEPHONE LABOR INC |
| 1912146 | May 30, 1933 | Glow discharge device | JOHNSON JOHN B | BELL TELEPHONE LABOR INC |
| 1911858 | May 30, 1933 | Extrusion die | TREBES BRUNO M A | BELL TELEPHONE LABOR INC |
| 1911803 | May 30, 1933 | Insulating material | ROBERT BURNS | BELL TELEPHONE LABOR INC |
| 1912456 | June 6, 1933 | Transposition bracket | KLEIN CHARLES H | BELL TELEPHONE LABOR INC |
| 1912453 | June 6, 1933 | Telephone exchance system | HENRY HOVLAND | BELL TELEPHONE LABOR INC |
| 1912442 | June 6, 1933 | Loaded cable | GILBERT JOHN J | BELL TELEPHONE LABOR INC |
| 1912426 | June 6, 1933 | Electric meter | BLATTNER DAVID G ; HOPKINS HARRIS F | BELL TELEPHONE LABOR INC |
| 1912415 | June 6, 1933 | Photo electric system | UPHOFF LESLIE S ; RUMPEL CARL H | BELL TELEPHONE LABOR INC |
| 1912405 | June 6, 1933 | Glass working machine | RONCI VICTOR L | BELL TELEPHONE LABOR INC |
| 1912404 | June 6, 1933 | Electron discharge device | RONCI VICTOR L | BELL TELEPHONE LABOR INC |
| 1914186 | June 13, 1933 | Translating device | WENTE EDWARD C | BELL TELEPHONE LABOR INC |
| 1914124 | June 13, 1933 | Telephone system | HARPER ROBERT W | BELL TELEPHONE LABOR INC |
| 1914103 | June 13, 1933 | Signaling system | BJORNSON BJORN G | BELL TELEPHONE LABOR INC |
| 1914099 | June 13, 1933 | Acoustic device | BEDELL EUAL H | BELL TELEPHONE LABOR INC |
| 1913443 | June 13, 1933 | Telegraph repeater | HEARN RICHARD B | BELL TELEPHONE LABOR INC |
| 1913440 | June 13, 1933 | Retractile device | BRUCE FREILE ; MAGRATH ARTHUR C | BELL TELEPHONE LABOR INC |
| 1913438 | June 13, 1933 | Tuning dial | FLAMMER HOWARD A ; FRACKER EDWARD G | BELL TELEPHONE LABOR INC |
| 1913432 | June 13, 1933 | Electric discharge device | DENZLER ARTHUR H | BELL TELEPHONE LABOR INC |
| 1913428 | June 13, 1933 | Radio receiver circuit | EDMOND BRUCE | BELL TELEPHONE LABOR INC |
| 1913427 | June 13, 1933 | Electric discharge device | BOND DONALD S | BELL TELEPHONE LABOR INC |
| 1915389 | June 27, 1933 | Regulator system | SOLE JOHN H | BELL TELEPHONE LABOR INC |
| 1915386 | June 27, 1933 | Process for the production of magnetic materials in powdered form | SCHUMACHER EARLE E ; ELLIS WILLIAM C | BELL TELEPHONE LABOR INC |
| 1915382 | June 27, 1933 | Radio telephone system | PRUDEN HAROLD M ; TAYLOR CHARLES C | BELL TELEPHONE LABOR INC AMERICAN TELEPHONE & TELEGRAPH |
| 1915368 | June 27, 1933 | Oscillator | LACK FREDERICK R | BELL TELEPHONE LABOR INC |
| 1915366 | June 27, 1933 | Telegraph switching system | KINKEAD FULLERTON S | BELL TELEPHONE LABOR INC |
| 1915358 | June 27, 1933 | Electrodynamic device | GILES LEONARD W | BELL TELEPHONE LABOR INC |
| 1917072 | July 4, 1933 | Acoustic device | SMYTHE EDWIN H | BELL TELEPHONE LABOR INC |
| 1917064 | July 4, 1933 | Vacuum tube circuits | ROMNES HAAKEN I | BELL TELEPHONE LABOR INC |
| 1917061 | July 4, 1933 | Composite transmission system | QUARLES DONALD A | BELL TELEPHONE LABOR INC |
| 1917052 | July 4, 1933 | Power line carrier current system | NEBEL CHARLES N | BELL TELEPHONE LABOR INC |
| 1917035 | July 4, 1933 | Circuit for reducing interference | JACOBS OLIVER B | BELL TELEPHONE LABOR INC |
| 1917016 | July 4, 1933 | Circuit for reducing interference | BURTON EVERETT T. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1917015 | July 4, 1933 | Power amplifier | BURTON EVERETT T | BELL TELEPHONE LABOR INC |
| 1917013 | July 4, 1933 | Sound translating device | BOSTWICK LEE G | BELL TELEPHONE LABOR INC |
| 1917012 | July 4, 1933 | Sound translating device | BLATTNER DAVID G | BELL TELEPHONE LABOR INC |
| 1917009 | July 4, 1933 | Electrical connecter | BETTS WALTER L ; ERNEST SORENY | BELL TELEPHONE LABOR INC |
| 1917008 | July 4, 1933 | Timing mechanism | BECK WILLIAM O | BELL TELEPHONE LABOR INC |
| 1917007 | July 4, 1933 | Sound translating device | ATKINS GEORGE E | BELL TELEPHONE LABOR INC |
| 1916761 | July 4, 1933 | Telephone exchange system | HENRY ISRAEL H ; HERSEY RALPH E | BELL TELEPHONE LABOR INC |
| 1916760 | July 4, 1933 | Telephone exchange system | HENRY ISRAEL H | BELL TELEPHONE LABOR INC |
| 1916358 | July 4, 1933 | Radio direction finder | EDMOND BRUCE ; FRIIS HARALD T | BELL TELEPHONE LABOR INC |
| 1916320 | July 4, 1933 | Stereoscopic picture with exaggerated or diminished relief | IVES HERBERT E | BELL TELEPHONE LABOR INC |
| 1916231 | July 4, 1933 | Measurement of electrical characteristics of transmission circuits and networks | OCH HENRY G ; HINSHAW FOSTER A | BELL TELEPHONE LABOR INC |
| 1916223 | July 4, 1933 | Sound translating device | WALTER KALIN | BELL TELEPHONE LABOR INC |
| 1917921 | July 11, 1933 | Frequency changer system | BURTON EVERETT T | BELL TELEPHONE LABOR INC |
| 1917885 | July 11, 1933 | Telegraph repeater circuit | HEARN RICHARD B | BELL TELEPHONE LABOR INC |
| 1917884 | July 11, 1933 | Call charging telephone system | HAGUE ALFRED E | BELL TELEPHONE LABOR INC |
| 1917882 | July 11, 1933 | Signaling system | GILBERT JOHN J | BELL TELEPHONE LABOR INC |
| 1917881 | July 11, 1933 | Remote control device | GERMANTON CHARLES E | BELL TELEPHONE LABOR INC |
| 1917879 | July 11, 1933 | Telephone system | DRAPER JOHN B | BELL TELEPHONE LABOR INC |
| 1917859 | July 11, 1933 | Telephone system | STACY LELAND J | BELL TELEPHONE LABOR INC |
| 1919046 | July 18, 1933 | Selective calling circuits | SCRIVEN EDWARD O | BELL TELEPHONE LABOR INC |
| 1919039 | July 18, 1933 | Switching device | RITCHIE GEORGE A | BELL TELEPHONE LABOR INC |
| 1919035 | July 18, 1933 | Carrier telegraph interference suppressor | PHELPS WALTER A ; KOERNER ALLAN M | BELL TELEPHONE LABOR INC |
| 1919019 | July 18, 1933 | Artificial cable and loading coil therefor | GREENIDGE RALPH M C | BELL TELEPHONE LABOR INC |
| 1918977 | July 18, 1933 | Synchronous motor | MARRISON WARREN A. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1918976 | July 18, 1933 | Piezo-electric crystals | MARRISON WARREN A | BELL TELEPHONE LABOR INC |
| 1918972 | July 18, 1933 | Phonograph reproducer | KING JOHN H | BELL TELEPHONE LABOR INC |
| 1918971 | July 18, 1933 | Insulation compound | KEMP ARCHIE R ; INGMANSON JOHN H | BELL TELEPHONE LABOR INC |
| 1918822 | July 18, 1933 | Signal transmission system | NORMAN NATHANIEL C | BELL TELEPHONE LABOR INC |
| 1918309 | July 18, 1933 | Glow discharge lamp | WEINHART HOWARD W | BELL TELEPHONE LABOR INC |
| 1918271 | July 18, 1933 | Sound recording and reproducing system | KELLER ARTHUR C | BELL TELEPHONE LABOR INC |
| 1918267 | July 18, 1933 | Sound recording and reproducing system | WILLIAM HERRIOTT | BELL TELEPHONE LABOR INC |
| 1918259 | July 18, 1933 | Electrical resistance | GABRIEL JOHN C | BELL TELEPHONE LABOR INC |
| 1918244 | July 18, 1933 | Manufacture of vapor electric devices | BOND DONALD S | BELL TELEPHONE LABOR INC |
| 1919814 | July 25, 1933 | Electric control system | TRUCKSESS DAVID E | BELL TELEPHONE LABOR INC |
| 1919808 | July 25, 1933 | Power supply system | SIEGMUND HUMPHREYS O | BELL TELEPHONE LABOR INC |
| 1919804 | July 25, 1933 | Transmission of sound and images | RYAN FRANCIS M | BELL TELEPHONE LABOR INC |
| 1919803 | July 25, 1933 | Measuring and indicating system | ROETKEN ALFRED A | BELL TELEPHONE LABOR INC |
| 1919799 | July 25, 1933 | Telephone pay station receptacle | MELICK JOHN M | BELL TELEPHONE LABOR INC |
| 1919796 | July 25, 1933 | Mechanical vibrating element | MARRISON WARREN A | BELL TELEPHONE LABOR INC |
| 1919795 | July 25, 1933 | Subharmonic frequency producer | MARRISON WARREN A. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1920274 | August 1, 1933 | Wave translating system | PIDGEON HOWARD A ; MCNALLY JAMES O | BELL TELEPHONE LABOR INC |
| 1920238 | August 1, 1933 | Wave translating system | BLACK HAROLD S | BELL TELEPHONE LABOR INC |
| 1921469 | August 8, 1933 | Film editing machine | KUHN JOHN J ; TERRY ROY V | BELL TELEPHONE LABOR INC |
| 1921441 | August 8, 1933 | Electric resistance device | TEMPLETON BRYCE O | BELL TELEPHONE LABOR INC |
| 1921433 | August 8, 1933 | Constant temperature apparatus | HOVGAARD OLE M | BELL TELEPHONE LABOR INC |
| 1921432 | August 8, 1933 | Constant temperature apparatus | BURRELL STALLARD | BELL TELEPHONE LABOR INC |
| 1921431 | August 8, 1933 | Loading system | SHEA TIMOTHY E | BELL TELEPHONE LABOR INC |
| 1921430 | August 8, 1933 | Electromagnetic switching device | REYNOLDS JOHN N ; DOBBIN HENRY F | BELL TELEPHONE LABOR INC |
| 1921425 | August 8, 1933 | Polar relay circuit | NEBEL CHARLES N | BELL TELEPHONE LABOR INC |
| 1921409 | August 8, 1933 | Telephone system | HINRICHSEN EDWARD E | BELL TELEPHONE LABOR INC |
| 1921404 | August 8, 1933 | Continuous film processing machine | CRABTREE JAMES | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1921065 | August 8, 1933 | Electron emitter and process of making same | BECKER JOSEPH A | BELL TELEPHONE LABOR INC |
| 1921035 | August 8, 1933 | Wave filter | MASON WARREN P | BELL TELEPHONE LABOR INC |
| 1921024 | August 8, 1933 | Alarm system | FIELD JOSEPH C | BELL TELEPHONE LABOR INC |
| 1921022 | August 8, 1933 | Submarine cable signaling system | BURTON EVERETT T. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1921004 | August 8, 1933 | Gaseous discharge device | SAMUEL ARTHUR L | BELL TELEPHONE LABOR INC |
| 1920964 | August 8, 1933 | Electrodeposition of alloys | BURNS ROBERT M | BELL TELEPHONE LABOR INC |
| 1922677 | August 15, 1933 | Radio direction finding system | GREIG JOHN W ; BAILEY ARNOLD B | BELL TELEPHONE LABOR INC |
| 1922669 | August 15, 1933 | Coupling device | ELMER LLOYD A | BELL TELEPHONE LABOR INC |
| 1922654 | August 15, 1933 | Modulating device | BAIR RALPH S ; BISHOP JOHN B | BELL TELEPHONE LABOR INC |
| 1922602 | August 15, 1933 | Volume control circuits | NORMAN NATHANIEL C | BELL TELEPHONE LABOR INC |
| 1922059 | August 15, 1933 | Radio receiving system | OHL RUSSELI S | BELL TELEPHONE LABOR INC |
| 1923686 | August 22, 1933 | Electron discharge device | PIDGEON HOWARD A ; MCNALLY JAMES O | BELL TELEPHONE LABOR INC |
| 1923543 | August 22, 1933 | Modulation system | LAWRENCE WALTER L | BELL TELEPHONE LABOR INC |
| 1924836 | August 29, 1933 | Amplifier | COUSINS VAN M | BELL TELEPHONE LABOR INC |
| 1924115 | August 29, 1933 | Protective means for electrical systems | FERRELL ENOCH B | BELL TELEPHONE LABOR INC |
| 1924106 | August 29, 1933 | Submarine cable loading coil | BUCKLEY OLIVER E | BELL TELEPHONE LABOR INC |
| 1925696 | September 5, 1933 | Telephone system | IRVINE FRANK S | BELL TELEPHONE LABOR INC |
| 1925693 | September 5, 1933 | Glow discharge lamp | FRANK GRAY | BELL TELEPHONE LABOR INC |
| 1925690 | September 5, 1933 | Sound picture system | ELMER LLOYD A | BELL TELEPHONE LABOR INC |
| 1925659 | September 5, 1933 | Acoustic device | GILES LEONARD W | BELL TELEPHONE LABOR INC |
| 1926899 | September 12, 1933 | Submarine communication cable | GILBERT JOHN J | BELL TELEPHONE LABOR INC |
| 1926894 | September 12, 1933 | Selector testing system | DEHN JOSEPH W | BELL TELEPHONE LABOR INC |
| 1926889 | September 12, 1933 | Glow discharge device | WEINHART HOWARD W | BELL TELEPHONE LABOR INC |
| 1926880 | September 12, 1933 | Transmission control in two-way signaling systems | NORWINE ANDREW C | BELL TELEPHONE LABOR INC |
| 1926877 | September 12, 1933 | Transmission network | MARRISON WARREN A | BELL TELEPHONE LABOR INC |
| 1926876 | September 12, 1933 | Time announcing machine | MALLINA RUDOLPH F | BELL TELEPHONE LABOR INC |
| 1927400 | September 19, 1933 | Method of applying and vulcanizing an insulating compound | GRAY ALVIN N ; KEMP ARCHIE R | BELL TELEPHONE LABOR INC |
| 1927099 | September 19, 1933 | Vacuum tube circuits | SHOWER EDMUND G | BELL TELEPHONE LABOR INC |
| 1927084 | September 19, 1933 | Support for filament assemblies | CHARLES DEPEW | BELL TELEPHONE LABOR INC |
| 1927082 | September 19, 1933 | Amplifier | CORBIN JOSEPH E | BELL TELEPHONE LABOR INC |
| 1927070 | September 19, 1933 | Distortion correction in wave transmission systems | EUGENE PETERSON | BELL TELEPHONE LABOR INC |
| 1930279 | October 10, 1933 | Motor control system | MORTON EDMUND R | BELL TELEPHONE LABOR INC |
| 1930278 | October 10, 1933 | Oscillation generator | MARRISON WARREN A | BELL TELEPHONE LABOR INC |
| 1930275 | October 10, 1933 | Telephone switchboard | KNOWLTON ALFRED D ; GILMORE ALFRED C | BELL TELEPHONE LABOR INC |
| 1930274 | October 10, 1933 | Insulating compound | KEMP ARCHIE R ; INGMANSON JOHN H | BELL TELEPHONE LABOR INC |
| 1930270 | October 10, 1933 | Portable telephone set | HAYWARD JOHN M | BELL TELEPHONE LABOR INC |
| 1930269 | October 10, 1933 | Inductance device | GREENIDGE RALPH M C | BELL TELEPHONE LABOR INC |
| 1930267 | October 10, 1933 | Testing and adjusting device | GIBSON ROBERT D ; HARLEY JOHN B | BELL TELEPHONE LABOR INC |
| 1930264 | October 10, 1933 | Electric current interrupter | CURTIS AUSTEN M | BELL TELEPHONE LABOR INC |
| 1930255 | October 10, 1933 | Telephone system | SMITH GERARD V | BELL TELEPHONE LABOR INC |
| 1929925 | October 10, 1933 | Multiple terminal bank | KUHN JOHN J | BELL TELEPHONE LABOR INC |
| 1929446 | October 10, 1933 | Resistance device | OGG ROBERT A | BELL TELEPHONE LABOR INC |
| 1931063 | October 17, 1933 | Signal transmission system | DOBA JR STEPHEN | BELL TELEPHONE LABOR INC |
| 1931036 | October 17, 1933 | Radio antenna supporting and accessory structure | RYAN FRANCIS M | BELL TELEPHONE LABOR INC |
| 1931031 | October 17, 1933 | Signal transmission system | NEBEL CHARLES N | BELL TELEPHONE LABOR INC |
| 1931028 | October 17, 1933 | Piezo-electric relay | MARRISON WARREN A | BELL TELEPHONE LABOR INC |
| 1930915 | October 17, 1933 | Acoustic device | WENTE EDWARD C | BELL TELEPHONE LABOR INC |
| 1930913 | October 17, 1933 | Film editing machine | TERRY ROY V | BELL TELEPHONE LABOR INC |
| 1930906 | October 17, 1933 | Sound translating device | ROBERT NORDENSWAN | BELL TELEPHONE LABOR INC |
| 1930898 | October 17, 1933 | Program transmission | JOHNSON KENNETH S | BELL TELEPHONE LABOR INC |
| 1932253 | October 24, 1933 | Television system | IVES HERBERT E | BELL TELEPHONE LABOR INC |
| 1931886 | October 24, 1933 | Acoustic apparatus | SCHLENKER VESPER A | BELL TELEPHONE LABOR INC |
| 1931877 | October 24, 1933 | Testing system for space discharge devices | SAMUEL ARTHUR L | BELL TELEPHONE LABOR INC |
| 1931874 | October 24, 1933 | Electron discharge device | MENDENHALL HALLAM E | BELL TELEPHONE LABOR INC |
| 1931873 | October 24, 1933 | Frequency control system | MARRISON WARREN A | BELL TELEPHONE LABOR INC |
| 1931867 | October 24, 1933 | Battery control system | HOLDEN WILLIAM H T ; JUTSON ROBERT P ; LAREW JOEL L | AMERICAN TELEPHONE & TELEGRAPH BELL TELEPHONE LABOR INC |
| 1931866 | October 24, 1933 | Gain control circuits | HEISING RAYMOND A | BELL TELEPHONE LABOR INC |
| 1933274 | October 31, 1933 | Testing device | ARTHUR LUDWIG | BELL TELEPHONE LABOR INC |
| 1933272 | October 31, 1933 | Electric connecter | BERNARD LEUVELINK ; BETTS WALTER L | BELL TELEPHONE LABOR INC |
| 1933264 | October 31, 1933 | Coin receptacle | HOYT FREDERICK A | BELL TELEPHONE LABOR INC |
| 1933261 | October 31, 1933 | Shielding | HARRIS HENRY J | BELL TELEPHONE LABOR INC |
| 1933252 | October 31, 1933 | Translating device | GENT EDGAR W | BELL TELEPHONE LABOR INC |
| 1933251 | October 31, 1933 | Photographic film drive mechanism | GAUTHIER MARCEL C | BELL TELEPHONE LABOR INC |
| 1933248 | October 31, 1933 | Radio direction finding | EVANS PORTER H ; GREIG JOHN W | BELL TELEPHONE LABOR INC |
| 1932816 | October 31, 1933 | Remote control device | GARGAN JOHN O ; BROWNE BENNIE O | BELL TELEPHONE LABOR INC |
| 1932465 | October 31, 1933 | Radio receiving system | JENSEN AXEL G | BELL TELEPHONE LABOR INC |
| 1932435 | October 31, 1933 | Transmission network | AIKEN CHARLES B ; CORBIN JOSEPH E | BELL TELEPHONE LABOR INC |
| 1934423 | November 7, 1933 | System for communicating with moving vehicles | GREEN CHARLES W | BELL TELEPHONE LABOR INC |
| 1934416 | November 7, 1933 | Vibration translating device | FLANDERS PAUL B ; HARRISON HENRY C | BELL TELEPHONE LABOR INC |
| 1934412 | November 7, 1933 | Radio receiving circuit | ENGLUND CARL R | BELL TELEPHONE LABOR INC |
| 1934400 | November 7, 1933 | Frequency control system | BOLLMAN JOHN H | BELL TELEPHONE LABOR INC |
| 1934390 | November 7, 1933 | Frequency changer | UPHOFF LESLIE S | BELL TELEPHONE LABOR INC |
| 1934378 | November 7, 1933 | Electric discharge device | RONCI VICTOR L ; CHARLES DEPEW | BELL TELEPHONE LABOR INC |
| 1934369 | November 7, 1933 | Electric discharge device | MENDENHALL HALLAM E | BELL TELEPHONE LABOR INC |
| 1934364 | November 7, 1933 | Impulse receiving system | LOCKE GEORGE A | BELL TELEPHONE LABOR INC |
| 1935325 | November 14, 1933 | Frequency standard | MARRISON WARREN A | BELL TELEPHONE LABOR INC |
| 1935323 | November 14, 1933 | Underground cable | KEMP ARCHIE R ; INGMANSON JOHN H | BELL TELEPHONE LABOR INC |
| 1935322 | November 14, 1933 | Lead covered cable | KEMP ARCHIE R. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1935321 | November 14, 1933 | Gutta-percha insulation material | KEMP ARCHIE R ; INGMANSON JOHN H | BELL TELEPHONE LABOR INC |
| 1935316 | November 14, 1933 | Detector | GALT ROGERS H | BELL TELEPHONE LABOR INC |
| 1935301 | November 14, 1933 | Sound reproducing system | SMYTHE EDWIN H | BELL TELEPHONE LABOR INC |
| 1935300 | November 14, 1933 | Sound reproducing system | SMYTHE EDWIN H | BELL TELEPHONE LABOR INC |
| 1936200 | November 21, 1933 | Telegraph exchange system | LOCKE GEORGE A ; LANE CUTHBERT C | BELL TELEPHONE LABOR INC |
| 1936194 | November 21, 1933 | Gas pressure alarm contactor | HENNEBERGER THOMAS C ; PIKE VERNON B | AMERICAN TELEPHONE & TELEGRAPH BELL TELEPHONE LABOR INC |
| 1936187 | November 21, 1933 | Electron discharge device | DENZLER ARTHUR H | BELL TELEPHONE LABOR INC |
| 1936153 | November 21, 1933 | Electric wave transmission system | BURTON EVERETT T | BELL TELEPHONE LABOR INC |
| 1936145 | November 21, 1933 | Sound reproducing system | WENTE EDWARD C | BELL TELEPHONE LABOR INC |
| 1937143 | November 28, 1933 | Excess voltage protection circuit | CURTIS AUSTEN M | BELL TELEPHONE LABOR INC |
| 1937118 | November 28, 1933 | Projecting pictures in stereoscopic relief | IVES HERBERT E | BELL TELEPHONE LABOR INC |
| 1937115 | November 28, 1933 | Testing machine | HAYFORD WALTER S ; TOWNSEND JOHN R | BELL TELEPHONE LABOR INC |
| 1936686 | November 28, 1933 | Sound recording material and method of manufacture | PATTERSON EVERETT M | BELL TELEPHONE LABOR INC |
| 1936683 | November 28, 1933 | Frequency measurement | MARRISON WARREN A | BELL TELEPHONE LABOR INC |
| 1936658 | November 28, 1933 | Volume control system | BJORNSON BJORN G ; DOBA JR STEPHEN | BELL TELEPHONE LABOR INC |
| 1936656 | November 28, 1933 | Printing telegraph system | BELL JOHN H | BELL TELEPHONE LABOR INC |
| 1936655 | November 28, 1933 | Telegraph system | BELL JOHN H | BELL TELEPHONE LABOR INC |
| 1939086 | December 12, 1933 | Supporting device | SHAFER JR IRA C | BELL TELEPHONE LABOR INC |
| 1939079 | December 12, 1933 | Sound picture reproducing equipment | PFANNENSTIEHL HARRY | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1939073 | December 12, 1933 | Temperature control apparatus | MALLES RALPH E | BELL TELEPHONE LABOR INC |
| 1939072 | December 12, 1933 | Phonograph recording machine | MALLINA RUDOLPH F | BELL TELEPHONE LABOR INC |
| 1939060 | December 12, 1933 | Modulating system | KINGSBURY EDWIN F | BELL TELEPHONE LABOR INC |
| 1939053 | December 12, 1933 | Short wave transmission | HUNT LOYD E | BELL TELEPHONE LABOR INC |
| 1938726 | December 12, 1933 | Electromagnetic device | SLAUSON WILLIAM C | BELL TELEPHONE LABOR INC |
| 1938709 | December 12, 1933 | Telephone system | MASSONNEAU ROBERT F | BELL TELEPHONE LABERATORIES IN |
| 1938706 | December 12, 1933 | Phonograph machine | MALLINA RUDOLPH F | BELL TELEPHONE LABOR INC |
| 1938698 | December 12, 1933 | Coin controlled apparatus | HOYT FREDERICK A | BELL TELEPHONE LABOR INC |
| 1938694 | December 12, 1933 | Sound film recording apparatus | GOEHNER WILLIAM R ; WILLIAM HERRIOTT | BELL TELEPHONE LABOR INC |
| 1938684 | December 12, 1933 | Testing apparatus | BOND DONALD S ; FULLER CALVIN S ; ERICKSON CHARLES L | BELL TELEPHONE LABOR INC |
| 1940599 | December 19, 1933 | Temperature controlling device | MARRISON WARREN A. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1940097 | December 19, 1933 | Radio receiving system | OHL RUSSELL S | BELL TELEPHONE LABOR INC |
| 1940095 | December 19, 1933 | Coin collector | MELICK JOHN M | BELL TELEPHONE LABOR INC |
| 1940093 | December 19, 1933 | Electric musical instrument | LINDRIDGE CHARLES D | BELL TELEPHONE LABOR INC |
| 1940089 | December 19, 1933 | Phonograph record turntable | HARRISON HENRY C | BELL TELEPHONE LABOR INC |
| 1940088 | December 19, 1933 | Sound picture record container | HARRISON HENRY C | BELL TELEPHONE LABOR INC |
| 1939725 | December 19, 1933 | Transmission circuits | PRUDEN HAROLD M ; WADSWORTH PAUL W | BELL TELEPHONE LABOR INC |
| 1939680 | December 19, 1933 | Voice operated circuit | FISHER HAROLD J | BELL TELEPHONE LABOR INC |
| 1941253 | December 26, 1933 | Relay testing apparatus | DOWD ANDREW D | BELL TELEPHONE LABOR INC |
| 1941116 | December 26, 1933 | Communication system | STRIEBY MAURICE E | BELL TELEPHONE LABOR INC |
| 1941110 | December 26, 1933 | Electron discharge device | RONCI VICTOR L ; CRAWFORD ALLEN I | BELL TELEPHONE LABOR INC |
| 1941085 | December 26, 1933 | Telephone system | HAGUE ALFRED E ; DRAPER JOHN B | BELL TELEPHONE LABOR INC |
| 1941074 | December 26, 1933 | Electric discharge device | BOND DONALD S ; CADMUS KENNETH S | BELL TELEPHONE LABOR INC |
| 1941073 | December 26, 1933 | Pneumatic sound reproducer | BLATTNER DAVID G | BELL TELEPHONE LABOR INC |
| 1943130 | January 9, 1934 | Telephone system | MACPHERSON HUGH D | BELL TELEPHONE LABOR INC |
| 1943115 | January 9, 1934 | Electrical insulation for magnetic bodies | ELLIS WILLIAM C | BELL TELEPHONE LABOR INC |
| 1943104 | January 9, 1934 | Transmission control in signaling systems | BJORNSON BJORN G ; DOREN MITCHELL | AMERICAN TELEPHONE & TELEGRAPH BELL TELEPHONE LABOR INC |
| 1943088 | January 9, 1934 | Rectifier system | POWER JAMES R | BELL TELEPHONE LABOR INC |
| 1942501 | January 9, 1934 | Light-sensitive tube | STILWELL GEORGE R | BELL TELEPHONE LABOR INC |
| 1942488 | January 9, 1934 | Electric wave filter | OCH HENRY G | BELL TELEPHONE LABOR INC |
| 1942487 | January 9, 1934 | Telephone system | OAKES WILLIAM C | BELL TELEPHONE LABOR INC |
| 1942483 | January 9, 1934 | Phase shifting device | MARRISON WARREN A | BELL TELEPHONE LABOR INC |
| 1942471 | January 9, 1934 | Operator's position equipment | BUCHANAN RUSSELL B | BELL TELEPHONE LABOR INC |
| 1944244 | January 23, 1934 | Telephone system | KORN FRANKLIN A | BELL TELEPHONE LABOR INC |
| 1944238 | January 23, 1934 | Telegraphone | HICKMAN CLARENCE N | BELL TELEPHONE LABOR INC |
| 1944218 | January 23, 1934 | Telegraph repeater | CATOGGE JOSEPH J | BELL TELEPHONE LABOR INC |
| 1944216 | January 23, 1934 | Signaling system | BURTON EVERETT T | BELL TELEPHONE LABOR INC |
| 1944215 | January 23, 1934 | Method of making bimetallic stock | BURR GEORGE W | BELL TELEPHONE LABOR INC |
| 1944209 | January 23, 1934 | Transmission network | BODE HENDRIK W | BELL TELEPHONE LABOR INC |
| 1946261 | February 6, 1934 | Electromagnetic switching device | ZUPA FRANK A | BELL TELEPHONE LABOR INC |
| 1946228 | February 6, 1934 | Telephone system | MCKIM JAMES B | BELL TELEPHONE LABOR INC |
| 1946223 | February 6, 1934 | Translating device | MASON WARREN P | BELL TELEPHONE LABOR INC |
| 1946216 | February 6, 1934 | Teletypewriter selector system | KINKEAD FULLERTON S | BELL TELEPHONE LABOR INC |
| 1945558 | February 6, 1934 | Phonograph recording machine | MALLINA RUDOLPH F | BELL TELEPHONE LABOR INC |
| 1947256 | February 13, 1934 | Antenna counterpoise system | FRIIS HARALD T | BELL TELEPHONE LABOR INC |
| 1947247 | February 13, 1934 | High frequency transmission system | EDMOND BRUCE | BELL TELEPHONE LABOR INC |
| 1947209 | February 13, 1934 | Speech amplitude control | MATHES ROBERT C | BELL TELEPHONE LABOR INC |
| 1947182 | February 13, 1934 | Constant frequency apparatus | BETTS PHILANDER H | BELL TELEPHONE LABOR INC |
| 1947164 | February 13, 1934 | Phonograph reproducer | MORRISON LOUIS A | BELL TELEPHONE LABOR INC |
| 1948981 | February 27, 1934 | Duplex communication system | CURTIS AUSTEN M | BELL TELEPHONE LABOR INC |
| 1948977 | February 27, 1934 | Electric wave amplifier | AIKEN CHARLES B | BELL TELEPHONE LABOR INC |
| 1948976 | February 27, 1934 | Electric wave amplifying system | WILSON IRA G | BELL TELEPHONE LABOR INC |
| 1948973 | February 27, 1934 | Wave transmission with narrowed band | STEINBERG JOHN C | BELL TELEPHONE LABOR INC |
| 1948969 | February 27, 1934 | Electric switching device | LANE CUTHBERT C | BELL TELEPHONE LABOR INC |
| 1948941 | February 27, 1934 | Electrooptical system | OLPIN ALBERT R | BELL TELEPHONE LABOR INC |
| 1950156 | March 6, 1934 | Method of making terminal connections | SWOBODA ADOLPH R | BELL TELEPHONE LABOR INC |
| 1950143 | March 6, 1934 | Remote control device | HAVILAND JOHN R | BELL TELEPHONE LABOR INC |
| 1950129 | March 6, 1934 | Telephone system | WILEY WHITNEY | BELL TELEPHONE LABOR INC |
| 1950127 | March 6, 1934 | Communication system | STRIEBY MAURICE E | BELL TELEPHONE LABOR INC |
| 1950126 | March 6, 1934 | Cable conductor winding | STAPLES ROBERT T | BELL TELEPHONE LABOR INC |
| 1950123 | March 6, 1934 | Automatic selection of receiving channels | OHL RUSSELL S | BELL TELEPHONE LABOR INC |
| 1950109 | March 6, 1934 | Turntable for phonograph records | HARRISON HENRY C | BELL TELEPHONE LABOR INC |
| 1949447 | March 6, 1934 | Card holder | BECK WILLIAM O | BELL TELEPHONE LABOR INC |
| 1951918 | March 20, 1934 | Electrical bonding | LLEWELLYN FREDERICK B | BELL TELEPHONE LABOR INC |
| 1951916 | March 20, 1934 | Printing telegraph exchange system | LANE CUTHBERT C | BELL TELEPHONE LABOR INC |
| 1951908 | March 20, 1934 | Resistance testing machine | HAYFORD WALTER S | BELL TELEPHONE LABOR INC |
| 1951899 | March 20, 1934 | Geometrical instrument | BUDENBOM HORACE T | BELL TELEPHONE LABOR INC |
| 1951887 | March 20, 1934 | Telephone pay station apparatus | TEMPLETON BRYCE O ; MILLS PERCY E | BELL TELEPHONE LABOR INC |
| 1952879 | March 27, 1934 | Direction finding system | MARTIN DE LOSS K | BELL TELEPHONE LABOR INC |
| 1952875 | March 27, 1934 | Multiconductor cable | LIVINGSTON FRANK B | BELL TELEPHONE LABOR INC |
| 1952870 | March 27, 1934 | Telephone system | JORDAN WILLIAM C | BELL TELEPHONE LABOR INC |
| 1952861 | March 27, 1934 | Recording system | HARLEY JOHN B | BELL TELEPHONE LABOR INC |
| 1952859 | March 27, 1934 | Pneumatic receiving valve | HAMPTON LEON N ; GIERTSEN OYVIND N | BELL TELEPHONE LABOR INC |
| 1952835 | March 27, 1934 | Telephone system | BLAKE FOSTER B | BELL TELEPHONE LABOR INC |
| 1952592 | March 27, 1934 | Electrooptical system | HORTON JOSEPH W | BELL TELEPHONE LABOR INC |
| 1952579 | March 27, 1934 | Wave translating system | BLACK KNOX C | BELL TELEPHONE LABOR INC |
| 1952578 | March 27, 1934 | Voice-operated circuits | BJORNSON BJORN G | BELL TELEPHONE LABOR INC |
| 1952577 | March 27, 1934 | Mechanical amplifier | BENNETT ARTHUR F | BELL TELEPHONE LABOR INC |
| 1953503 | April 3, 1934 | Crossbar switch | REYNOLDS JOHN N | BELL TELEPHONE LABOR INC |
| 1953496 | April 3, 1934 | Long distance telephone system | NEBEL CHARLES N | BELL TELEPHONE LABOR INC |
| 1953487 | April 3, 1934 | Transmission control circuits | KNOOP WILLIAM A | BELL TELEPHONE LABOR INC |
| 1953474 | April 3, 1934 | Telephone exchange system | FOWLER CLARENCE B ; GOODERHAM JOHN W | BELL TELEPHONE LABOR INC |
| 1953465 | April 3, 1934 | Distortion reduction in signaling systems | CHESNUT ROY W | BELL TELEPHONE LABOR INC |
| 1953459 | April 3, 1934 | Transmission network | BENNETT WILLIAM R | BELL TELEPHONE LABOR INC |
| 1954995 | April 17, 1934 | Process for metal-coating phonograph records | HARRISON HENRY C | BELL TELEPHONE LABOR INC |
| 1954966 | April 17, 1934 | Sound translating device | THURAS ALBERT L | BELL TELEPHONE LABOR INC |
| 1954960 | April 17, 1934 | Method of joining thermoplastic insulation | ERNST STUDT ; KEMP ARCHIE R ; MALM FRANK S | FELTEN & GUILLEAUME CARLSWERK BELL TELEPHONE LABOR INC |
| 1954958 | April 17, 1934 | Electric glow discharge lamp | SMYTHE EDWIN H | BELL TELEPHONE LABOR INC |
| 1954950 | April 17, 1934 | Apparatus for metallically coating phonograph records | RUSSELL ALEXANDER G | BELL TELEPHONE LABOR INC |
| 1954943 | April 17, 1934 | Wave transmission network | NORTON EDWARD L | BELL TELEPHONE LABOR INC |
| 1955839 | April 24, 1934 | Electromagnetic switching device | SLAUSON WILLIAM C | BELL TELEPHONE LABOR INC |
| 1955828 | April 24, 1934 | Wave translating system | EUGENE PETERSON | BELL TELEPHONE LABOR INC |
| 1955827 | April 24, 1934 | Wave translating system | EUGENE PETERSON | BELL TELEPHONE LABOR INC |
| 1955823 | April 24, 1934 | Electron discharge device | MENDENHALL HALLAM E | BELL TELEPHONE LABOR INC |
| 1955812 | April 24, 1934 | Electric meter | KELLER ARTHUR C | BELL TELEPHONE LABOR INC |
| 1955801 | April 24, 1934 | Sound picture projector | GLUNT OMER M ; GENT EDGAR W | BELL TELEPHONE LABOR INC |
| 1955788 | April 24, 1934 | Transmission network | BODE HENDRIK W | BELL TELEPHONE LABOR INC |
| 1956744 | May 1, 1934 | Fire extinguisher | MELICK JOHN M | BELL TELEPHONE LABOR INC |
| 1956715 | May 1, 1934 | Correction for changes in line transmission | GREEN CHARLES W | BELL TELEPHONE LABOR INC |
| 1956709 | May 1, 1934 | Calling circuit | COOKE LEIGHTON B | BELL TELEPHONE LABOR INC |
| 1956550 | May 1, 1934 | Incandescent lamp system | DAWSON WILFRID L | BELL TELEPHONE LABOR INC |
| 1956547 | May 1, 1934 | Repeatered transmission system | BLACK HAROLD S | BELL TELEPHONE LABOR INC |
| 1957953 | May 8, 1934 | Electrooptical system | FRANK GRAY | BELL TELEPHONE LABOR INC |
| 1957565 | May 8, 1934 | Alarm system | WHEELER CLYDE H | BELL TELEPHONE LABOR INC |
| 1957538 | May 8, 1934 | Electrical network | JENSEN AXEL G | BELL TELEPHONE LABOR INC |
| 1957519 | May 8, 1934 | Multiple radio receiving system | AIKEN CHARLES B | BELL TELEPHONE LABOR INC |
| 1957502 | May 8, 1934 | Multiplex telegraph system | LOCKE GEORGE A | BELL TELEPHONE LABOR INC |
| 1957487 | May 8, 1934 | Multicore cable with thermoplastic insulation | BUCKLEY OLIVER E ; MALM FRANK S | BELL TELEPHONE LABOR INC |
| 1957486 | May 8, 1934 | Electron emitter | BECKER JOSEPH A | BELL TELEPHONE LABOR INC |
| 1958640 | May 15, 1934 | Multiunit relay | REYNOLDS JOHN N | BELL TELEPHONE LABOR INC |
| 1958635 | May 15, 1934 | Sender testing system | OSCAR MYERS | BELL TELEPHONE LABOR INC |
| 1958626 | May 15, 1934 | Reeling device | KRANTZ HUBERT K | BELL TELEPHONE LABOR INC |
| 1958620 | May 15, 1934 | Piezo-electric crystals having low temperature coefficients of frequency | HEISING RAYMOND A | BELL TELEPHONE LABOR INC |
| 1958616 | May 15, 1934 | Phonograph recording machine | GENT EDGAR W | BELL TELEPHONE LABOR INC |
| 1958612 | May 15, 1934 | Photographic process | DAWSON WILFRID L | BELL TELEPHONE LABOR INC |
| 1958611 | May 15, 1934 | Method of and system for testing signaling lines | CURTIS AUSTEN M | BELL TELEPHONE LABOR INC |
| 1958598 | May 15, 1934 | Machine for preshaping and applying tapes | TREBES BRUNO M. A. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1958596 | May 15, 1934 | Control system | STOLLER HUGH M | BELL TELEPHONE LABOR INC |
| 1960037 | May 22, 1934 | Telephone system | WILLIAMS SAMUEL B ; SCNDDER FREDERICK J | BELL TELEPHONE LABOR INC |
| 1960029 | May 22, 1934 | Electrodeposition of alloys | RUSSELL ALEXANDER G | BELL TELEPHONE LABOR INC |
| 1960025 | May 22, 1934 | Process for the formation of recording blanks | PATTERSON EVERETT M ; SHAW ALBERT D | BELL TELEPHONE LABOR INC |
| 1960011 | May 22, 1934 | Apparatus for making stereoscopic parallax panoramagrams | IVES HERBERT E. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1960007 | May 22, 1934 | Phonograph reproducer | HARRISON HENRY C | BELL TELEPHONE LABOR INC |
| 1959999 | May 22, 1934 | Magnetic materials and heat treatment thereof | CHEGWIDDEN RAYMOND A ; GREINER EARL S | BELL TELEPHONE LABOR INC |
| 1959449 | May 22, 1934 | Synchronous motor | STOLLER HUGH M | BELL TELEPHONE LABOR INC |
| 1959438 | May 22, 1934 | Signal transmission control | MATHES ROBERT C | BELL TELEPHONE LABOR INC |
| 1959429 | May 22, 1934 | Crystal filter | HOVGAARD OLE M | BELL TELEPHONE LABOR INC |
| 1959423 | May 22, 1934 | Feed mechanism for phonograph recorders | HARRISON HENRY C | BELL TELEPHONE LABOR INC |
| 1959421 | May 22, 1934 | Conduit joint | HARDESTY JAMES M | BELL TELEPHONE LABOR INC |
| 1959412 | May 22, 1934 | Telegraph circuit | HARDESTY JAMES M | BELL TELEPHONE LABOR INC |
| 1959407 | May 22, 1934 | Transmission system | EDMOND BRUCE | BELL TELEPHONE LABOR INC |
| 1959405 | May 22, 1934 | Transmission control | BJORNSON BJORN G | BELL TELEPHONE LABOR INC |
| 1961410 | June 5, 1934 | Sound energy translating apparatus | WEGEL RAYMOND L | BELL TELEPHONE LABOR INC |
| 1961407 | June 5, 1934 | Printing telegraph system | VERNAM GILBERT S ; LOCKE GEORGE A | AMERICAN TELEPHONE & TELEGRAPH BELL TELEPHONE LABOR INC |
| 1961393 | June 5, 1934 | Electron discharge device | RONCI VICTOR L ; ERICSSON HARRY W | BELL TELEPHONE LABOR INC |
| 1961385 | June 5, 1934 | Signaling system | O'NEILL HENRY W | BELL TELEPHONE LABOR INC |
| 1961381 | June 5, 1934 | Voice operated circuit | COURTNEY NORWINE ANDREW | BELL TELEPHONE LABOR INC |
| 1961372 | June 5, 1934 | Electrical recording | MARRISON WARREN A | BELL TELEPHONE LABOR INC |
| 1961367 | June 5, 1934 | Method of and system for testing multichannel electrical circuits | KUHN JOHN J | BELL TELEPHONE LABOR INC |
| 1961357 | June 5, 1934 | Radio receiving system | HEISING RAYMOND A | BELL TELEPHONE LABOR INC |
| 1961338 | June 5, 1934 | Photographic film processing | JAMES CRABTREE | BELL TELEPHONE LABOR INC |
| 1961334 | June 5, 1934 | Signal shaping device | BURTON EVERETT T | BELL TELEPHONE LABOR INC |
| 1961333 | June 5, 1934 | Finish testing method and apparatus | ROBERT BURNS | BELL TELEPHONE LABOR INC |
| 1962367 | June 12, 1934 | Motion picture system with sound | SMYTHE EDWIN H. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1962358 | June 12, 1934 | Magnetic separator | WILLIAM ORVIS | BELL TELEPHONE LABOR INC |
| 1962354 | June 12, 1934 | Remote control of motors | LANE CUTHBERT C | BELL TELEPHONE LABOR INC |
| 1962333 | June 12, 1934 | Speed regulator system | TRUCKSESS DAVID E | BELL TELEPHONE LABOR INC |
| 1962312 | June 12, 1934 | Signaling system | KNOOP WILLIAM A | BELL TELEPHONE LABOR INC |
| 1962304 | June 12, 1934 | Electromagnetic translating device | HARRISON HENRY C | BELL TELEPHONE LABOR INC |
| 1963769 | June 19, 1934 | Telephone system | WILLIFORD OSCAR H | BELL TELEPHONE LABOR INC |
| 1963755 | June 19, 1934 | Electrical resistance | MEAD EDWARD D | BELL TELEPHONE LABOR INC |
| 1963754 | June 19, 1934 | Telephone system | MATTHIES WILLIAM H | BELL TELEPHONE LABOR INC |
| 1963753 | June 19, 1934 | Sound motion picture system | MALLINA RUDOLPH F | BELL TELEPHONE LABOR INC |
| 1963751 | June 19, 1934 | Negative resistance device | LLEWELLYN FREDERICK B | BELL TELEPHONE LABOR INC |
| 1963726 | June 19, 1934 | Single sideband modulator | TYNAN ANDREW G | BELL TELEPHONE LABOR INC |
| 1963723 | June 19, 1934 | Impedance transformer | STERBA ERNEST J. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1963721 | June 19, 1934 | Writing shelf | SMITH EDWARD M | BELL TELEPHONE LABOR INC |
| 1963719 | June 19, 1934 | Mechanical vibrating element | SCHELKUNOFF SERGEI A | BELL TELEPHONE LABOR INC |
| 1964606 | June 26, 1934 | Acoustic device | THURAS ALBERT L | BELL TELEPHONE LABOR INC |
| 1964604 | June 26, 1934 | Acoustic device | SWICKARD ANDREW E | BELL TELEPHONE LABOR INC |
| 1964588 | June 26, 1934 | Telephone system | MCCANDLESS CLARENCE H | BELL TELEPHONE LABOR INC |
| 1964580 | June 26, 1934 | Scanning apparatus | IVES HERBERT E | BELL TELEPHONE LABOR INC |
| 1964541 | June 26, 1934 | Mounting for electrical devices | ERNEST SORENY | BELL TELEPHONE LABOR INC |
| 1964528 | June 26, 1934 | Coin receptacle cover | MILLS PERCY E. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1964505 | June 26, 1934 | Electromagnetic relay | CUMMINGS GEORGE C | BELL TELEPHONE LABOR INC |
| 1965439 | July 3, 1934 | Regulated rectifier circuit | STOLLER HUGH M. | BELL TELEPHONE LABORATORLES, INCORPORATED |
| 1965423 | July 3, 1934 | Telephone substation apparatus | LUM GEORGE R. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1965421 | July 3, 1934 | Disconnect signal | LOCKE GEORGE A | BELL TELEPHONE LABOR INC |
| 1965414 | July 3, 1934 | Sound picture recording system | FRANK HARDY | BELL TELEPHONE LABOR INC |
| 1965405 | July 3, 1934 | Acoustic device | BLATTNER DAVID G | BELL TELEPHONE LABOR INC |
| 1965383 | July 3, 1934 | Station circuit for telegraph exchange systems | LANE CUTHBERT C | BELL TELEPHONE LABOR INC |
| 1965347 | July 3, 1934 | Direction control, switch for signaling systems | KNOOP WILLIAM A | BELL TELEPHONE LABOR INC |
| 1966523 | July 17, 1934 | Electron discharge device | RONCI VICTOR L | BELL TELEPHONE LABOR INC |
| 1966495 | July 17, 1934 | Telephone dial illuminator | MORRIS FRITTS | BELL TELEPHONE LABOR INC |
| 1966491 | July 17, 1934 | Antenna system | FERRELL ENOCH B | BELL TELEPHONE LABOR INC |
| 1967250 | July 24, 1934 | Wave filter | MASON WARREN P | BELL TELEPHONE LABOR INC |
| 1967249 | July 24, 1934 | High frequency amplifier | MASON WARREN P | BELL TELEPHONE LABOR INC |
| 1967223 | July 24, 1934 | Vibration transmitting device | BOSTWICK LEE G | BELL TELEPHONE LABOR INC |
| 1968460 | July 31, 1934 | Noise suppression circuit | LLEWELLYN FREDERICK B | BELL TELEPHONE LABOR INC |
| 1968457 | July 31, 1934 | Transmission of intelligence over wires | KNOOP WILLIAM A | BELL TELEPHONE LABORATOIRES IN |
| 1968450 | July 31, 1934 | Noise suppression circuit | HEISING RAYMOND A | BELL TELEPHONE LABORATOIRES IN |
| 1968448 | July 31, 1934 | Sound measuring system | HARRISON HENRY C | BELL TELEPHONE LABOR INC |
| 1968447 | July 31, 1934 | Underground conduit | HARDESTY JAMES M | BELL TELEPHONE LABOR INC |
| 1968438 | July 31, 1934 | Driving mechanism for sound recording and reproducing systems | ELMER LLOYD A | BELL TELEPHONE LABOR INC |
| 1968435 | July 31, 1934 | Testing circuit | BERTELS ARNOLD S | BELL TELEPHONE LABOR INC |
| 1968429 | July 31, 1934 | Sound picture apparatus | STOLLER HUGH M | BELL TELEPHONE LABOR INC |
| 1968420 | July 31, 1934 | Telephone system | POWELL ALBERT C | BELL TELEPHONE LABOR INC |
| 1969571 | August 7, 1934 | Transmission network | MASON WARREN P | BELL TELEPHONE LABOR INC |
| 1969559 | August 7, 1934 | Acoustic device | KELLY JOSEPH B | BELL TELEPHONE LABOR INC |
| 1969558 | August 7, 1934 | Electrooptical device | IVES HERBERT E | BELL TELEPHONE LABOR INC |
| 1969529 | August 7, 1934 | Terminal | SHAFER JR IRA C | BELL TELEPHONE LABOR INC |
| 1969525 | August 7, 1934 | Machine for working glass | RONCI VICTOR L | BELL TELEPHONE LABOR INC |
| 1969496 | August 7, 1934 | Electric discharge device | BEARDOW GEORGE M | BELL TELEPHONE LABOR INC |
| 1969488 | August 7, 1934 | Circuit controller | WAGAR HAROLD N | BELL TELEPHONE LABOR INC |
| 1970350 | August 14, 1934 | Transmission line | WEST JULIAN M | BELL TELEPHONE LABOR INC |
| 1970334 | August 14, 1934 | Transmission control circuits | NORWINE ANDREW C | BELL TELEPHONE LABOR INC |
| 1970329 | August 14, 1934 | Battery control circuit | MARRISON WARREN A | BELL TELEPHONE LABOR INC |
| 1970325 | August 14, 1934 | Reduction of distortion in vacuum tube circuits | KREER JR JOHN G | BELL TELEPHONE LABOR INC |
| 1970316 | August 14, 1934 | Vacuum tube circuits | KALB ROBERT M | BELL TELEPHONE LABOR INC |
| 1970312 | August 14, 1934 | Electrooptical system | IVES HERBERT E | BELL TELEPHONE LABOR INC |
| 1970311 | August 14, 1934 | Projection of images for viewing in stereoscopic relief | IVES HERBERT E | BELL TELEPHONE LABOR INC |
| 1970310 | August 14, 1934 | Electrooptical system | IVES HERBERT E | BELL TELEPHONE LABOR INC |
| 1971235 | August 21, 1934 | Radio receiving system | RETTENMEYER FRANCIS X | BELL TELEPHONE LABOR INC |
| 1970939 | August 21, 1934 | Telephone power plant | LANGABEER HARVEY T ; LUNSFORD ROBERT L | BELL TELEPHONE LABOR INC |
| 1970938 | August 21, 1934 | Telegraph exchange system | KINKEAD FULLERTON S ; KNANDEL GEORGE J | BELL TELEPHONE LABOR INC AMERICAN TELEPHONE & TELEGRAPH |
| 1970933 | August 21, 1934 | Wave transmission network | FREDERICK CARL L | BELL TELEPHONE LABOR INC |
| 1970926 | August 21, 1934 | Sound radiator | WENTE EDWARD C | BELL TELEPHONE LABOR INC |
| 1971686 | August 28, 1934 | Telegraph signal transmitting circuits | KINKEAD FULLERTON S | BELL TELEPHONE LABOR INC |
| 1971679 | August 28, 1934 | Transmission control circuits | DUDLEY HOMER W | BELL TELEPHONE LABOR INC |
| 1971675 | August 28, 1934 | Electrooptical image production | HORTON JOSEPH W | BELL TELEPHONE LABOR INC |
| 1971674 | August 28, 1934 | Electrooptical image production | BOLLMAN JOHN H | BELL TELEPHONE LABOR INC |
| 1972276 | September 4, 1934 | Electron discharge device | RONCI VICTOR L ; ERICSSON HARRY W | BELL TELEPHONE LABOR INC |
| 1973090 | September 11, 1934 | Electromagnetic switching device | MILLER DANIEL D | BELL TELEPHONE LABOR INC |
| 1972877 | September 11, 1934 | Concentric return transmission system | EGLIN JAMES M | BELL TELEPHONE LABOR INC |
| 1974090 | September 18, 1934 | Multiplex signaling system | WILSON IRA G | BELL TELEPHONE LABOR INC |
| 1974087 | September 18, 1934 | Telephone system | STOCKER CLOSMAN P | BELL TELEPHONE LABOR INC |
| 1974082 | September 18, 1934 | Regulator system | MORTON EDMUND R | BELL TELEPHONE LABOR INC |
| 1974081 | September 18, 1934 | Piezo-electric wave filter | MASON WARREN P | BELL TELEPHONE LABOR INC |
| 1974067 | September 18, 1934 | Electrooptical system | FRANK GRAY | BELL TELEPHONE LABOR INC |
| 1973703 | September 18, 1934 | Resistance varying material | GOUCHER FREDERICK S ; CHRISTENSEN CARL J | BELL TELEPHONE LABOR INC |
| 1976558 | October 9, 1934 | Device and circuit for frequency translation | HEISING RAYMOND A | BELL TELEPHONE LABOR INC |
| 1976548 | October 9, 1934 | Electrical communication system | FIELD JOSEPH C | BELL TELEPHONE LABOR INC |
| 1976521 | October 9, 1934 | Electron discharge device | RONCI VICTOR L ; CLARK JAMES E | BELL TELEPHONE LABOR INC |
| 1976505 | October 9, 1934 | Vibration damping system for phonographs | MALLINA RUDOLPH F | BELL TELEPHONE LABOR INC |
| 1976503 | October 9, 1934 | Impulse testing device | FRANCIS KUCHAS | BELL TELEPHONE LABOR INC |
| 1976502 | October 9, 1934 | Pressure treatment of substances such as latex | KEMP ARCHIE R | BELL TELEPHONE LABOR INC |
| 1976489 | October 9, 1934 | Electron discharge device | OWEN GARGAN JOHN | BELL TELEPHONE LABOR INC |
| 1976481 | October 9, 1934 | Wave analysis | CASTNER THEODORE G | BELL TELEPHONE LABOR INC |
| 1976467 | October 9, 1934 | Fire extinguisher | WHEELER CLYDE H | BELL TELEPHONE LABOR INC |
| 1976457 | October 9, 1934 | Method of and means for removing modulation from a modulated wave | OHL RUSSELL S | BELL TELEPHONE LABOR INC |
| 1976847 | October 16, 1934 | Electric conductor | GORDON CHESTER S. ; HONAN EDWARD M. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1978200 | October 23, 1934 | Electrostatic acoustic device | HEISING RAYMOND A | BELL TELEPHONE LABOR INC |
| 1978188 | October 23, 1934 | Piezoelectric crystal apparatus | CICCOLELLA DAVID F | BELL TELEPHONE LABOR INC |
| 1978164 | October 23, 1934 | Wire splicing machine | INWAGEN JR CHARLES L VAN ; MESCH ORWAR A | BELL TELEPHONE LABOR INC |
| 1979113 | October 30, 1934 | Sound recording and reproducing machine | MALLINA RUDOLPH F | BELL TELEPHONE LABOR INC |
| 1979112 | October 30, 1934 | Remote control system | KINKEAD FULLERTON S | BELL TELEPHONE LABOR INC |
| 1979101 | October 30, 1934 | Transmission system | DUDLEY HOMER W | BELL TELEPHONE LABOR INC |
| 1979072 | October 30, 1934 | Telephone booth | KUNTZ FRANK A | BELL TELEPHONE LABOR INC |
| 1979064 | October 30, 1934 | Telegraph repeating system | BURTON EVERETT T | BELL TELEPHONE LABOR INC |
| 1979054 | October 30, 1934 | Signaling system | SCHEER WILLIAM H | BELL TELEPHONE LABOR INC |
| 1979026 | October 30, 1934 | Telegraph system | DOWD ANDREW D | BELL TELEPHONE LABOR INC |
| 1979020 | October 30, 1934 | Telephone exchange system | WILEY WHITNEY | BELL TELEPHONE LABOR INC |
| 1978419 | October 30, 1934 | Transmission system | DUDLEY HOMER W | BELL TELEPHONE LABOR INC |
| 1978418 | October 30, 1934 | Concentric return multiconductor cable | DUDLEY HOMER W | BELL TELEPHONE LABOR INC |
| 1979273 | November 6, 1934 | Telegraph exchange system | LANE CUTHBERT C ; LOCKE GEORGE A | BELL TELEPHONE LABSRATORIES IN |
| 1980242 | November 13, 1934 | Telephone receiver | WOLPERT FREDERICK S | BELL TELEPHONE LABOR INC |
| 1980220 | November 13, 1934 | Intermittent feed device | MORTON EDMUND R | BELL TELEPHONE LABOR INC |
| 1980214 | November 13, 1934 | Mounting for electric devices | LUM GEORGE R | BELL TELEPHONE LABOR INC |
| 1980198 | November 13, 1934 | Electrooptical tube | FRANK GRAY | BELL TELEPHONE LABOR INC |
| 1980197 | November 13, 1934 | Method of sealing conductors in plates | GRAY ALVIN N | BELL TELEPHONE LABOR INC |
| 1980196 | November 13, 1934 | Electric discharge device | GLASS MYRON S | BELL TELEPHONE LABOR INC |
| 1980187 | November 13, 1934 | Vacuum tube socket | CRAWFORD ALLEN I | BELL TELEPHONE LABOR INC |
| 1980176 | November 13, 1934 | Unidirectional current passing device | BECKER JOSEPH A | BELL TELEPHONE LABOR INC |
| 1980175 | November 13, 1934 | Telephone system | BEAUMONT WILLIAM M | BELL TELEPHONE LABOR INC |
| 1981793 | November 20, 1934 | Sound reproducer | KELLER ARTHUR C | BELL TELEPHONE LABOR INC |
| 1981686 | November 20, 1934 | Vibration translating system | BOSTWICK LEE G | BELL TELEPHONE LABOR INC |
| 1981669 | November 20, 1934 | Electric discharge device | RONCI VICTOR L ; CHARLES DEPEW | BELL TELEPHONE LABOR INC |
| 1981668 | November 20, 1934 | Electron discharge device | RONCI VICTOR L | BELL TELEPHONE LABOR INC |
| 1981664 | November 20, 1934 | Method of preserving poles | QUARLES DONALD A | BELL TELEPHONE LABOR INC |
| 1981652 | November 20, 1934 | Method of coating electrodes | LONG GEORGE E | BELL TELEPHONE LABOR INC |
| 1981649 | November 20, 1934 | Telephone substation apparatus | KING DOUGLAS H | BELL TELEPHONE LABOR INC |
| 1982844 | December 4, 1934 | Wire splicing machine | JR. CHARLES L. VAN INWAGEN, | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1982810 | December 4, 1934 | Magnetic material | HICKMAN CLARENCE N | BELL TELEPHONE LABOR INC |
| 1982805 | December 4, 1934 | Pneumatic ticket distributing system | HAMPTON LEON N ; DAVIS ROY W ; RICHARD CHARLES D | BELL TELEPHONE LABOR INC |
| 1982784 | December 4, 1934 | Submarine cable | BUCKLEY OLIVER E | BELL TELEPHONE LABOR INC |
| 1982782 | December 4, 1934 | Gas-filled tube circuit | BJORNSON BJORN G | BELL TELEPHONE LABOR INC |
| 1984066 | December 11, 1934 | Signal transmission system | JACOBS OLIVER B | BELL TELEPHONE LABOR INC |
| 1984065 | December 11, 1934 | Circuit for controlling transmission in signaling systems | GREENWOOD QUENTIN E | BELL TELEPHONE LABOR INC |
| 1984062 | December 11, 1934 | Telephone set | FOLEY JOHN W | BELL TELEPHONE LABOR INC |
| 1984058 | December 11, 1934 | Signaling system adopted for deep sea telephone cables | CURTIS AUSTEN M | BELL TELEPHONE LABOR INC |
| 1984037 | December 11, 1934 | Coin receptacle cover | SHANN OSCAR A | BELL TELEPHONE LABOR INC |
| 1983537 | December 11, 1934 | Carrier current signaling system | CHESNUT ROY W | BELL TELEPHONE LABOR INC |
| 1983528 | December 11, 1934 | Carrier line system | BLACK HAROLD S | BELL TELEPHONE LABOR INC |
| 1985046 | December 18, 1934 | Electrical wave production | MARRISON WARREN A ; MEACHAM LARNED A | BELL TELEPHONE LABOR INC |
| 1985042 | December 18, 1934 | Wave transmission network | LANE CLARENCE E. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1985013 | December 18, 1934 | Artificial larynx | BURCHETT GEORGE W | BELL TELEPHONE LABOR INC |
| 1985011 | December 18, 1934 | Teletypewriter apparatus | BESCHERER EDWIN A | BELL TELEPHONE LABOR INC |
| 1985005 | December 18, 1934 | Vibration translating device | WIEBUSCH CHARLES F | BELL TELEPHONE LABOR INC |
| 1984998 | December 18, 1934 | Mounting for electrical devices | ERNEST SORENY | BELL TELEPHONE LABOR INC |
| 1984995 | December 18, 1934 | Testing device | RUMPEL CARL H | BELL TELEPHONE LABOR INC |
| 1984993 | December 18, 1934 | Electron discharge device | RONCI VICTOR L ; LAICO JOSEPH P | BELL TELEPHONE LABOR INC |
| 1984992 | December 18, 1934 | Electron discharge device | RONCI VICTOR L ; CLARK JAMES E | BELL TELEPHONE LABOR INC |
| 1984538 | December 18, 1934 | Reeling apparatus | MOUGEY WILBUR E | BELL TELEPHONE LABOR INC |
| 1984536 | December 18, 1934 | Coin controlled apparatus | MELICK JOHN M | BELL TELEPHONE LABOR INC |
| 1984533 | December 18, 1934 | Piezo-electric oscillator | KNOTT WILLIAM M | BELL TELEPHONE LABOR INC |
| 1984526 | December 18, 1934 | Filter for suppression of high frequency current | GIVEN FREDERICK J | BELL TELEPHONE LABOR INC |
| 1985730 | December 25, 1934 | Photography | IVES HERBERT E | BELL TELEPHONE LABOR INC |
| 1985722 | December 25, 1934 | Acoustic device | ERICKSON JOHN R | BELL TELEPHONE LABOR INC |
| 1986656 | January 1, 1935 | Sealed joint and method of making same | WEINHART HOWARD W. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1986536 | January 1, 1935 | APPARATUS FOR METALLICALLY COATING PHONOGRAPH RECORDS | RUSSELL ALEXANDER G. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1986534 | January 1, 1935 | Apparatus for coating electrical conductors | RONCI VICTOR L ; WILSON JAMES R ; CHARLES DEPEW | BELL TELEPHONE LABOR INC |
| 1986533 | January 1, 1935 | Apparatus for coating filamentary material | RONCI VICTOR L ; WILSON JAMES R ; CHARLES DEPEW | BELL TELEPHONE LABOR INC |
| 1987445 | January 8, 1935 | Electrodynamic device | WALTER KALIN | BELL TELEPHONE LABOR INC |
| 1988006 | January 15, 1935 | Direction finding system | GREIG JOHN W. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1988005 | January 15, 1935 | Cable conductor impregnating material and its method of production | GILBERT JOHN J ; MALM FRANK S | BELL TELEPHONE LABOR INC |
| 1987963 | January 15, 1935 | Machine for jointing the insulation of cable cores | MALM FRANK S | BELL TELEPHONE LABOR INC |
| 1989618 | January 29, 1935 | Electrooptical transmission | IVES HERBERT E. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1991206 | February 12, 1935 | Apparatus for making acoustic resistances | HARRISON HENRY C | BELL TELEPHONE LABOR INC |
| 1991195 | February 12, 1935 | Wave transmission network | SIDNEY DARLINGTON | BELL TELEPHONE LABOR INC |
| 1990551 | February 12, 1935 | Synchronous vibrating relay circuit | KNOOP WILLIAM A. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1990544 | February 12, 1935 | Electrooptical system | GRAY FRANK | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1992271 | February 26, 1935 | Automatic stock quotation system | WILLIAMS SAMUEL B. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1992267 | February 26, 1935 | Glow discharge device | WEINHART HOWARD W. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1992234 | February 26, 1935 | Apparatus for cleaning phonograph records | PATTERSON EVERETT M. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1993795 | March 12, 1935 | Sound recording system | MILLER ROBERT A. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1993768 | March 12, 1935 | Acoustic device | ATKINS GEORGE E. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1994674 | March 19, 1935 | Cable grip | INWAGEN JR CHARLES L VAN | BELL TELEPHONE LABOR INC |
| 1994668 | March 19, 1935 | Metal coating for electroplated articles | RUSSELL ALEXANDER G | BELL TELEPHONE LABOR INC |
| 1994632 | March 19, 1935 | Asymmetric conductor | BECKER JOSEPH A. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1996516 | April 2, 1935 | Printing telegraph private branch exchange system | KINKEAD FULLERTON S. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1996511 | April 2, 1935 | Phonograph reproducing system | HARRISON HENRY C. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1997207 | April 9, 1935 | Voice operated circuits | BJORNSON BJORN G | BELL TELEPHONE LABOR INC |
| 1998104 | April 16, 1935 | Generator control circuit | SOLE JOHN H | BELL TELEPHONE LABOR INC |
| 1998884 | April 23, 1935 | Electric discharge device | JR. GEORGE H. ROCKWOOD, ; LODGE WILLIAM B. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 1998840 | April 23, 1935 | Magnetic material and method of treatment thereof | LEGG VICTOR E ; EUGENE PETERSON ; WRATHALL LEISHMAN R | BELL TELEPHONE LABOR INC |
| 1998826 | April 23, 1935 | Electrical conducting system | WENTZ JESSE F | BELL TELEPHONE LABOR INC |
| 1999351 | April 30, 1935 | Electron discharge device | BAKER CARL I. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2000198 | May 7, 1935 | Sound and picture system | SMYTHE EDWIN H. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2000163 | May 7, 1935 | Method of mounting electrodes | CLARK JAMES E. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2001090 | May 14, 1935 | Transmission network | BODE HENDRIK W. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2002216 | May 21, 1935 | Wave filter | BODE HENDRIK W. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2002204 | May 21, 1935 | Process of treating gutta percha | INGMANSON JOHN H ; MUELLER GEORGE S | BELL TELEPHONE LABOR INC |
| 2003036 | May 28, 1935 | Control circuit | CALLAHAN VINCENT T | BELL TELEPHONE LABOR INC |
| 2002689 | May 28, 1935 | Magnetic material and method of treating magnetic materials | BOZORTH RICHARD M. ; DILLINGER JOY F. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2003968 | June 4, 1935 | Magnetic telegraphone system | HICKMAN CLARENCE N. ; WENTE EDWARD C. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2003964 | June 4, 1935 | Repeatered line system | BLACK HAROLD S | BELL TELEPHONE LABOR INC |
| 2003959 | June 4, 1935 | Guy shield | ST JOHN EVERETT | BELL TELEPHONE LABOR INC |
| 2003937 | June 4, 1935 | Sound picture set | HUNT FRANKLIN L. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2003913 | June 4, 1935 | Position controlling device | WENTE EDWARD C. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2003457 | June 4, 1935 | Regulator circuit | MORTON EDMUND R | BELL TELEPHONE LABOR INC |
| 2003440 | June 4, 1935 | Vibration absorbing worm | HARRISON HENRY C | BELL TELEPHONE LABOR INC |
| 2003401 | June 4, 1935 | Inspection device | TERRY ROY V. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2004611 | June 11, 1935 | Flow indicator | KLEINFELDER WALTER C | BELL TELEPHONE LABOR INC |
| 2005588 | June 18, 1935 | Stylus feed mechanism for phonographs | MALLINA RUDOLPH F | BELL TELEPHONE LABOR INC |
| 2006698 | July 2, 1935 | Electrical measuring system | EUGENE PETERSON | BELL TELEPHONE LABOR INC |
| 2006489 | July 2, 1935 | Telephone system | STRICKLER WALTER B | BELL TELEPHONE LABOR INC |
| 2006483 | July 2, 1935 | Telephone exchange system | SAUL GEORGE N | BELL TELEPHONE LABOR INC |
| 2006472 | July 2, 1935 | Testing system | MILLER OHMER R | BELL TELEPHONE LABOR INC |
| 2006470 | July 2, 1935 | Telephone system | MATHES ROBERT C | BELL TELEPHONE LABOR INC |
| 2006455 | July 2, 1935 | Telephone message recording system | HICKMAN CLARENCE N | BELL TELEPHONE LABOR INC |
| 2006453 | July 2, 1935 | Acoustic device | HARRISON HENRY C | BELL TELEPHONE LABOR INC |
| 2006438 | July 2, 1935 | Telephone exchange system | CARPENTER WARREN W | BELL TELEPHONE LABOR INC |
| 2006433 | July 2, 1935 | Coin collecting apparatus | BIERSTEDT GUSTAV C ; MILLS PERCY E | AMERICAN TELEPHONE & TELEGRAPH BELL TELEPHONE LABOR INC |
| 2006424 | July 2, 1935 | Telephone system | ULRICH HORACE W | BELL TELEPHONE LABOR INC |
| 2006354 | July 2, 1935 | Telephone system | HENRY HOVLAND | BELL TELEPHONE LABOR INC |
| 2007651 | July 9, 1935 | Electrooptical system | IVES HERBERT E | BELL TELEPHONE LABOR INC |
| 2007172 | July 9, 1935 | Wave translation system | BLACK HAROLD S | BELL TELEPHONE LABOR INC |
| 2008288 | July 16, 1935 | Wire wound electrical device | MALONE WILLIAM F | BELL TELEPHONE LABOR INC |
| 2008287 | July 16, 1935 | Telephone substation apparatus | LUM GEORGE R | BELL TELEPHONE LABOR INC |
| 2008283 | July 16, 1935 | Telephone substation apparatus | KING DOUGLAS H | BELL TELEPHONE LABOR INC |
| 2008281 | July 16, 1935 | Telephone system | HENRY HOVLAND | BELL TELEPHONE LABOR INC |
| 2008277 | July 16, 1935 | Coating for insulated wires | GORDON CHESTER S | BELL TELEPHONE LABOR INC |
| 2008266 | July 16, 1935 | Antenna sleet melting apparatus | STERBA ERNEST J | BELL TELEPHONE LABOR INC |
| 2008264 | July 16, 1935 | Signaling system | SOFFEL ROBERT O | BELL TELEPHONE LABOR INC |
| 2009085 | July 23, 1935 | Coin receptacle cover | JACKSON JOHN K | BELL TELEPHONE LABOR INC |
| 2009076 | July 23, 1935 | Telephone system | ULRICH HORACE W | BELL TELEPHONE LABOR INC |
| 2009074 | July 23, 1935 | Signal transmission system | SMITH LEO F | BELL TELEPHONE LABOR INC |
| 2008874 | July 23, 1935 | Photo-electric tube | OLPIN ALBERT R | BELL TELEPHONE LABOR INC |
| 2008861 | July 23, 1935 | Vulcanizable compound | GRAY ALVIN N ; KEMP ARCHIE R | BELL TELEPHONE LABOR INC |
| 2008859 | July 23, 1935 | Inductance device | GANZ ALBERT G | BELL TELEPHONE LABOR INC |
| 2008857 | July 23, 1935 | Mechanical impedance meter | FLANDERS PAUL B | BELL TELEPHONE LABOR INC |
| 2010665 | August 6, 1935 | Frequency changing device | HARTLEY RALPH V L | BELL TELEPHONE LABOR INC |
| 2010644 | August 6, 1935 | Signal transmission line | RIENSTRA ALBERT R | BELL TELEPHONE LABOR INC |
| 2010543 | August 6, 1935 | Electrooptical system | FRANK GRAY | BELL TELEPHONE LABOR INC |
| 2011932 | August 20, 1935 | Projection of motion pictures | IVES HERBERT E. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2011566 | August 20, 1935 | Wave translation system | BLACK HAROLD S | BELL TELEPHONE LABOR INC |
| 2012810 | August 27, 1935 | Transmission system | DOBA JR STEPHEN | BELL TELEPHONE LABOR INC |
| 2013154 | September 3, 1935 | Translating circuit | JENSEN AXEL G | BELL TELEPHONE LABOR INC |
| 2013140 | September 3, 1935 | Translating circuit | FRIIS HARALD T | BELL TELEPHONE LABOR INC |
| 2014232 | September 10, 1935 | Telephone system | HENRY HOVLAND | BELL TELEPHONE LABOR INC |
| 2014228 | September 10, 1935 | Variable attenuator | DE COUTOULY GUSTAVE C | BELL TELEPHONE LABOR INC |
| 2014223 | September 10, 1935 | Circuit for controlling transmission in signaling systems | BJORNSON BJORN G ; GREENWOOD QUENTIN E | BELL TELEPHONE LABOR INC |
| 2014222 | September 10, 1935 | Cutting tool | BIELING CARL A ; MASON WARREN P | BELL TELEPHONE LABOR INC |
| 2014221 | September 10, 1935 | Telephone system | JOHN BAUMFALK | BELL TELEPHONE LABOR INC |
| 2014215 | September 10, 1935 | Signaling system | EDWARD VROOM | BELL TELEPHONE LABOR INC |
| 2014534 | September 17, 1935 | Alternating current generator | KAREL LUTOMIRSKI | BELL TELEPHONE LABOR INC |
| 2014533 | September 17, 1935 | Regulatory device | LOGAN MASON A | BELL TELEPHONE LABOR INC |
| 2014528 | September 17, 1935 | Sound recording and reproducing system | KELLER ARTHUR C | BELL TELEPHONE LABOR INC |
| 2014525 | September 17, 1935 | Telephone apparatus | GOODRUM CHARLES L | BELL TELEPHONE LABOR INC |
| 2014521 | September 17, 1935 | Wave transmission network | CASPER WILLIAM L | BELL TELEPHONE LABOR INC |
| 2014514 | September 17, 1935 | Mechanical wave filter | AUGUSTADT HERBERT W | BELL TELEPHONE LABOR INC |
| 2015082 | September 24, 1935 | Electric wave translating system | MEYERS STANLEY T | BELL TELEPHONE LABOR INC |
| 2017659 | October 15, 1935 | Electrooptical system | IVES HERBERT E | BELL TELEPHONE LABOR INC |
| 2017657 | October 15, 1935 | Continuously loaded conductor | HARRIS JAMES E | BELL TELEPHONE LABOR INC |
| 2017654 | October 15, 1935 | Gain control circuit | COY JAY A ; ROMNES HAAKON I | BELL TELEPHONE LABOR INC |
| 2017653 | October 15, 1935 | Velocity comparing system for film driving apparatus | CLARKE CAROLE A ; ELMER LLOYD A | BELL TELEPHONE LABOR INC |
| 2017647 | October 15, 1935 | Electron discharge device | BETTS WALTER L | BELL TELEPHONE LABOR INC |
| 2017645 | October 15, 1935 | Volume control system | BARNEY HAROLD L | BELL TELEPHONE LABOR INC |
| 2017644 | October 15, 1935 | Service observation system | ALLEN LAWRENCE H ; MASSONNEAU ROBERT F | BELL TELEPHONE LABOR INC |
| 2017636 | October 15, 1935 | Stationery guiding instrumentality | SMALLEY MERWIN N | BELL TELEPHONE LABOR INC |
| 2017633 | October 15, 1935 | Record display device | MOTTRAM ELLIOTT T | BELL TELEPHONE LABOR INC |
| 2017438 | October 15, 1935 | Impulse transmitter | GOFF HAROLD W | BELL TELEPHONE LABOR INC |
| 2017130 | October 15, 1935 | Light valve | PERREAULT GEORGE E | BELL TELEPHONE LABOR INC |
| 2017092 | October 15, 1935 | Scanning apparatus | FRANK GRAY | BELL TELEPHONE LABOR INC |
| 2018496 | October 22, 1935 | Recorder stylus | KELLER ARTHUR C. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2018494 | October 22, 1935 | Transmission control circuit | HEARN RICHARD B | BELL TELEPHONE LABOR INC |
| 2018489 | October 22, 1935 | Signal transmission system | DOBA JR STEPHEN | BELL TELEPHONE LABOR INC |
| 2018477 | October 22, 1935 | Coaxial conductor system | WENTZ JESSE F | BELL TELEPHONE LABOR INC |
| 2018471 | October 22, 1935 | Electroplating upon a metallized surface | RUSSELL ALEXANDER G | BELL TELEPHONE LABOR INC |
| 2018466 | October 22, 1935 | Sound reproducing system | O'NEIL HORACE T ; DUNN HUGH K | BELL TELEPHONE LABOR INC |
| 2018465 | October 22, 1935 | Voice operated switching circuit | NEBEL CHARLES N | BELL TELEPHONE LABOR INC |
| 2018464 | October 22, 1935 | Voice operated transmission circuit | NEBEL CHARLES N | BELL TELEPHONE LABOR INC |
| 2018457 | October 22, 1935 | Telephone system | KING GERALD V | BELL TELEPHONE LABOR INC |
| 2018374 | October 22, 1935 | Sound recording system | MACNAIR WALTER A | BELL TELEPHONE LABOR INC |
| 2019638 | November 5, 1935 | Clutch and brake mechanism | STOLLER HUGH M ; MORTON EDMUND R | BELL TELEPHONE LABOR INC |
| 2019637 | November 5, 1935 | Volume control circuit | SHELLENG JOHN C | BELL TELEPHONE LABOR INC |
| 2019624 | November 5, 1935 | Attenuation equalizer | NORTON EDWARD L | BELL TELEPHONE LABOR INC |
| 2019603 | November 5, 1935 | Interconnection of transmission lines | GREEN CHARLES W | BELL TELEPHONE LABOR INC |
| 2019601 | November 5, 1935 | Telephone substation apparatus | EVANS WILLIAM A | BELL TELEPHONE LABOR INC |
| 2019597 | November 5, 1935 | Repeater | DOWD ANDREW D | BELL TELEPHONE LABOR INC |
| 2019594 | November 5, 1935 | Signal transmission system | BLACK KNOX C | BELL TELEPHONE LABOR INC |
| 2019504 | November 5, 1935 | Activation process for electron emitters | PRESCOTT JR CHARLES H | BELL TELEPHONE LABOR INC |
| 2019492 | November 5, 1935 | Electron discharge device | HALE DOUGLAS A S ; RONCI VICTOR L | BELL TELEPHONE LABOR INC |
| 2019484 | November 5, 1935 | Electron discharge device | CLARK JAMES E | BELL TELEPHONE LABOR INC |
| 2020875 | November 12, 1935 | Energization and control of amplifiers | BURTON EVERETT T | BELL TELEPHONE LABOR INC |
| 2020488 | November 12, 1935 | Telephone system | WALSH JOHN G | BELL TELEPHONE LABOR INC |
| 2020487 | November 12, 1935 | Electrical signaling | WADSWORTH PAUL W ; TAYLOR CHARLES C | BELL TELEPHONE LABOR INC AMERICAN TELEPHONE & TELEGRAPH |
| 2020458 | November 12, 1935 | Telephone system | DAHL JACK F | BELL TELEPHONE LABOR INC |
| 2020452 | November 12, 1935 | Transmission control in signaling systems | BARNEY HAROLD L | BELL TELEPHONE LABOR INC |
| 2020318 | November 12, 1935 | System including repeater | JACOBS OLIVER B | BELL TELEPHONE LABOR INC |
| 2020317 | November 12, 1935 | Transmission and repeater system | JACOBS OLIVER B | BELL TELEPHONE LABOR INC |
| 2020316 | November 12, 1935 | Submarine cable system | JACOBS OLIVER B | BELL TELEPHONE LABOR INC |
| 2020297 | November 12, 1935 | Submarine cable transmission | BUCKLEY OLIVER E ; JACOBS OLIVER B | BELL TELEPHONE LABOR INC |
| 2021329 | November 19, 1935 | Switching mechanism | REYNOLDS JOHN N | BELL TELEPHONE LABOR INC |
| 2021308 | November 19, 1935 | Coin detection system | HENRY HOVLAND | BELL TELEPHONE LABOR INC |
| 2021291 | November 19, 1935 | Telephone system | CLARK EDGAR H ; SCUDDER FREDERICK J | BELL TELEPHONE LABOR INC |
| 2021287 | November 19, 1935 | Telephone system | BUTZ EDWARD D ; KOECHLING CHARLES D | BELL TELEPHONE LABOR INC |
| 2021286 | November 19, 1935 | Telephone system | BUTZ EDWARD D | BELL TELEPHONE LABOR INC |
| 2021276 | November 19, 1935 | Spring winding machine | WEINHART HOWARD W | BELL TELEPHONE LABOR INC |
| 2022060 | November 26, 1935 | Acoustic device | SWICKARD ANDREW E | BELL TELEPHONE LABOR INC |
| 2022059 | November 26, 1935 | Terminal strip device | STOCKFLETH SIGURD J | BELL TELEPHONE LABOR INC |
| 2022053 | November 26, 1935 | Combined telephone and telegraph system | PRUDEN HAROLD M | BELL TELEPHONE LABOR INC |
| 2022052 | November 26, 1935 | Belt drive | MORTON EDMUND R | BELL TELEPHONE LABOR INC |
| 2022051 | November 26, 1935 | Interpolating telegraph receiving system | LOCKE GEORGE A | BELL TELEPHONE LABOR INC |
| 2022030 | November 26, 1935 | Signaling system | DIMOND THOMAS L | BELL TELEPHONE LABOR INC |
| 2022021 | November 26, 1935 | Cleaning tool | WHEELER CLYDE H | BELL TELEPHONE LABOR INC |
| 2021920 | November 26, 1935 | Control circuits | NORWINE ANDREW C | BELL TELEPHONE LABOR INC |
| 2023011 | December 3, 1935 | Telephone system | DUNHAM BERT G | BELL TELEPHONE LABOR INC |
| 2023010 | December 3, 1935 | Electrical counting system | DIMOND THOMAS L | BELL TELEPHONE LABOR INC |
| 2022991 | December 3, 1935 | Alarm transmitting system | WALTER ORVILLE L | BELL TELEPHONE LABOR INC |
| 2022977 | December 3, 1935 | Joint in line wires | QUARLES DONALD A | BELL TELEPHONE LABOR INC |
| 2022972 | December 3, 1935 | Variable gain amplifier | NEBEL CHARLES N | BELL TELEPHONE LABOR INC |
| 2022971 | December 3, 1935 | Coin collector apparatus | MILLS PERCY E | BELL TELEPHONE LABOR INC |
| 2022969 | December 3, 1935 | Electrical wave production | MEACHAM LARNED A | BELL TELEPHONE LABOR INC |
| 2022968 | December 3, 1935 | Frequency changing system | MAY DAVID T | BELL TELEPHONE LABOR INC |
| 2022964 | December 3, 1935 | Mounting for electrical devices | JONES EDWARD H | BELL TELEPHONE LABOR INC |
| 2023606 | December 10, 1935 | Automatic disconnect system | JOHN MESZAR | BELL TELEPHONE LABOR INC |
| 2023592 | December 10, 1935 | Coin chute | HOYT FREDERICK A | BELL TELEPHONE LABOR INC |
| 2023589 | December 10, 1935 | Switching mechanism | HERSEY RALPH E | BELL TELEPHONE LABOR INC |
| 2023581 | December 10, 1935 | Sound picture projector | GLUNT OMER M | BELL TELEPHONE LABOR INC |
| 2023494 | December 10, 1935 | Apparatus for the automatic grinding of crystals | STRIEBY MAURICE E | BELL TELEPHONE LABOR INC |
| 2024609 | December 17, 1935 | Sound picture system | SMYTHE EDWIN H | BELL TELEPHONE LABOR INC |
| 2024608 | December 17, 1935 | Sound and picture system | SMYTHE EDWIN H | BELL TELEPHONE LABOR INC |
| 2024601 | December 17, 1935 | Artificial larynx | RIESZ ROBERT R | BELL TELEPHONE LABOR INC |
| 2024592 | December 17, 1935 | Telephone system | MCKIM JAMES B | BELL TELEPHONE LABOR INC |
| 2024585 | December 17, 1935 | Manufacture of electron discharge devices | LAICO JOSEPH P | BELL TELEPHONE LABOR INC |
| 2024581 | December 17, 1935 | Telegraph toll system | KINKEAD FULLERTON S ; LOCKE GEORGE A | BELL TELEPHONE LABOR INC |
| 2024580 | December 17, 1935 | Communication system | KINKEAD FULLERTON S ; CORWIN THOMAS L | BELL TELEPHONE LABOR INC |
| 2024576 | December 17, 1935 | Electrical wave filter | GROSSMAN ALEXANDER J | BELL TELEPHONE LABOR INC |
| 2024571 | December 17, 1935 | Flow meter | GENT EDGAR W | BELL TELEPHONE LABOR INC |
| 2025407 | December 24, 1935 | Electrical recorder | WILLIAMS SAMUEL B | BELL TELEPHONE LABOR INC |
| 2025400 | December 24, 1935 | Volume control circuits | RING DOUGLAS H | BELL TELEPHONE LABOR INC |
| 2025390 | December 24, 1935 | Telephone pay station equipment | HOYT FREDERICK A | BELL TELEPHONE LABOR INC |
| 2025389 | December 24, 1935 | Telephone system | HENRY HOVLAND | BELL TELEPHONE LABOR INC |
| 2025388 | December 24, 1935 | Sound reproducing system | HENNING HARLEY A | BELL TELEPHONE LABOR INC |
| 2025380 | December 24, 1935 | Electric connecter device | CRUSER VICTOR I | BELL TELEPHONE LABOR INC |
| 2025374 | December 24, 1935 | Sound transmitting system | BOSTWICK LEE G | BELL TELEPHONE LABOR INC |
| 2025075 | December 24, 1935 | Electron discharge device | SAMUEL ARTHUR L | BELL TELEPHONE LABOR INC |
| 2026319 | December 31, 1935 | Amplifier | MURPHY ORLANDO J | BELL TELEPHONE LABOR INC |
| 2026316 | December 31, 1935 | Impregnation of insulating materials | KOHMAN GIRARD T | BELL TELEPHONE LABOR INC |
| 2026308 | December 31, 1935 | Balanced inductance device | GANZ ALBERT G | BELL TELEPHONE LABOR INC |
| 2026305 | December 31, 1935 | Transmission control in signaling systems | FISHER HAROLD J | BELL TELEPHONE LABOR INC |
| 2026303 | December 31, 1935 | Connecting device | CURRAN STANLEY T | BELL TELEPHONE LABOR INC |
| 2026298 | December 31, 1935 | Revolving chair | BOUMAN BERNHARD M | BELL TELEPHONE LABOR INC |
| 2027207 | January 7, 1936 | Sound picture apparatus | SMYTHE EDWIN H | BELL TELEPHONE LABOR INC |
| 2027197 | January 7, 1936 | Trunk circuit | POWELL ALBERT C | BELL TELEPHONE LABOR INC |
| 2027194 | January 7, 1936 | Telephone system | OSCAR MYERS | BELL TELEPHONE LABOR INC |
| 2027181 | January 7, 1936 | Sealing-in machine | LAICO JOSEPH P | BELL TELEPHONE LABOR INC |
| 2027180 | January 7, 1936 | Electron discharge device | LAICO JOSEPH P | BELL TELEPHONE LABOR INC |
| 2027169 | January 7, 1936 | Vibration translating device | HARRISON HENRY C | BELL TELEPHONE LABOR INC |
| 2027168 | January 7, 1936 | Vibration translating device | HARRISON HENRY C | BELL TELEPHONE LABOR INC |
| 2027142 | January 7, 1936 | Telephone exchange system | ALLISON SEWELL W ; MCKIM JAMES B | BELL TELEPHONE LABOR INC |
| 2028237 | January 21, 1936 | Locking device | OCH HENRY G | BELL TELEPHONE LABOR INC |
| 2028212 | January 21, 1936 | Radio transmitting system | HEISING RAYMOND A | BELL TELEPHONE LABOR INC |
| 2028210 | January 21, 1936 | Coin collecting apparatus | HARVEY WILLIAM H | BELL TELEPHONE LABOR INC |
| 2028195 | January 21, 1936 | Telephone system | DIMOND THOMAS L | BELL TELEPHONE LABOR INC |
| 2028194 | January 21, 1936 | Printing telegraph system | CORWIN THOMAS L | BELL TELEPHONE LABOR INC |
| 2028190 | January 21, 1936 | Impact testing device and method | ROBERT BURNS | BELL TELEPHONE LABOR INC |
| 2028180 | January 21, 1936 | Acoustic materials | ARNOLD HAROLD D | BELL TELEPHONE LABOR INC |
| 2028171 | January 21, 1936 | Lock | SHANN OSCAR A | BELL TELEPHONE LABOR INC |
| 2029113 | January 28, 1936 | Telephone coin collector | MILLS PERCY E | BELL TELEPHONE LABOR INC |
| 2029041 | January 28, 1936 | Loaded transmission line | STRIEBY MAURICE E | BELL TELEPHONE LABOR INC |
| 2029040 | January 28, 1936 | Photo-electric tube | STILWELL GEORGE R | BELL TELEPHONE LABOR INC |
| 2029030 | January 28, 1936 | Testing system | LOW FRANK K | BELL TELEPHONE LABOR INC |
| 2029018 | January 28, 1936 | Telephone system | CRUICKSHANK JOHN E | BELL TELEPHONE LABOR INC |
| 2029014 | January 28, 1936 | Wave transmission network | BODE HENDRIK W | BELL TELEPHONE LABOR INC |
| 2029723 | February 4, 1936 | Signaling system | JOHNSON LEWIS H ; LOW FRANK K | BELL TELEPHONE LABOR INC |
| 2029710 | February 4, 1936 | Selective signaling system | FIELD JOSEPH C | BELL TELEPHONE LABOR INC |
| 2029699 | February 4, 1936 | Alarm system | BOWNE LANGFORD J | BELL TELEPHONE LABOR INC |
| 2029698 | February 4, 1936 | Wave transmission network | BODE HENDRIK W | BELL TELEPHONE LABOR INC |
| 2029693 | February 4, 1936 | Telephone system | ANDERSON LYNN T ; LOW FRANK K | BELL TELEPHONE LABOR INC |
| 2029683 | February 4, 1936 | Telephone system | STOKELY RAY L | BELL TELEPHONE LABOR INC |
| 2030460 | February 11, 1936 | Electric resistance device | MORTON EDMUND R | BELL TELEPHONE LABOR INC |
| 2030421 | February 11, 1936 | Tuned vibrating system | THORALF AAMODT | BELL TELEPHONE LABOR INC |
| 2030419 | February 11, 1936 | Telephone exchange system | WILLIAMS SAMUEL B | BELL TELEPHONE LABOR INC |
| 2030416 | February 11, 1936 | Telephone system | VIBBARD EDWARD L | BELL TELEPHONE LABOR INC |
| 2030415 | February 11, 1936 | Telephone system | VIBBARD EDWARD L | BELL TELEPHONE LABOR INC |
| 2030412 | February 11, 1936 | Telephone exchange system | STEARN FRANKLIN A | BELL TELEPHONE LABOR INC |
| 2030400 | February 11, 1936 | Control circuit | ROSENE VICTOR E | BELL TELEPHONE LABOR INC |
| 2032218 | February 25, 1936 | Coin collector apparatus | MELICK JOHN M | BELL TELEPHONE LABOR INC |
| 2032194 | February 25, 1936 | Vibration translating device | WIEBUSCH CHARLES F | BELL TELEPHONE LABOR INC |
| 2032191 | February 25, 1936 | Circuit controller | TROMP GERARD P ; PAUL NEILL | BELL TELEPHONE LABOR INC |
| 2031980 | February 25, 1936 | Gain control circuit | ROMNES HAAKON I | BELL TELEPHONE LABOR INC |
| 2031952 | February 25, 1936 | Electrooptical system | HORTON JOSEPH W | BELL TELEPHONE LABOR INC |
| 2031951 | February 25, 1936 | Burglar alarm system | HARTLEY RALPH V L | BELL TELEPHONE LABOR INC |
| 2031948 | February 25, 1936 | Vibration damping device | HARRISON HENRY C | BELL TELEPHONE LABOR INC |
| 2031945 | February 25, 1936 | Electrical device | GLUNT OMER M | BELL TELEPHONE LABOR INC |
| 2031942 | February 25, 1936 | Control circuit | DUGUID JAMES M ; SOLE JOHN H | BELL TELEPHONE LABOR INC |
| 2031934 | February 25, 1936 | Printing telegraph system | CORWIN THEMAS L | BELL TELEPHONE LABOR INC |
| 2031922 | February 25, 1936 | Telephone system | BONOMI FELIX A | BELL TELEPHONE LABOR INC |
| 2031919 | February 25, 1936 | Amplifying system | BENNETT ARTHUR F ; GORDON JR MALCOLM K | BELL TELEPHONE LABOR INC |
| 2031598 | February 25, 1936 | Electrooptical system | FRANK GRAY | BELL TELEPHONE LABOR INC |
| 2032865 | March 3, 1936 | Piezoelectric crystal apparatus | BICLING CARL A | BELL TELEPHONE LABOR INC |
| 2032517 | March 3, 1936 | Coin collecting device | WHEELER CLYDE H | BELL TELEPHONE LABOR INC |
| 2032454 | March 3, 1936 | Coin collector | WHEELER CLYDE H | BELL TELEPHONE LABOR INC |
| 2032421 | March 3, 1936 | Teletypewriter system | KRECEK JOSEPH A | BELL TELEPHONE LABOR INC |
| 2033309 | March 10, 1936 | Electrolytic condenser | SIEGMUND HUMPHREYS O | BELL TELEPHONE LABOR INC |
| 2033287 | March 10, 1936 | Switching device | KILLE LINDLEY A | BELL TELEPHONE LABOR INC |
| 2033284 | March 10, 1936 | Phonograph reproducer | HARRISON HENRY C | BELL TELEPHONE LABOR INC |
| 2033283 | March 10, 1936 | Signaling system | GRAY CECIL R | BELL TELEPHONE LABOR INC |
| 2033282 | March 10, 1936 | Composite signaling system | GODDARD MYRON C | BELL TELEPHONE LABOR INC |
| 2033278 | March 10, 1936 | Vacuum tube amplifier | FAY CLIFFORD E | BELL TELEPHONE LABOR INC |
| 2033277 | March 10, 1936 | Film driving mechanism for sound picture systems | ELMER LLOYD A ; MAC-DOUGALL HARRY W | BELL TELEPHONE LABOR INC |
| 2033274 | March 10, 1936 | Amplifier | BURTON EVERETT T | BELL TELEPHONE LABOR INC |
| 2033271 | March 10, 1936 | Common frequency broadcasting system | AIKEN CHARLES B | BELL TELEPHONE LABOR INC |
| 2033136 | March 10, 1936 | Wave translation system | FERRELL ENOCH B | BELL TELEPHONE LABOR INC |
| 2033963 | March 17, 1936 | Wave translating system | WARE LAWRENCE A | BELL TELEPHONE LABOR INC |
| 2033956 | March 17, 1936 | Electrical transmission circuit | RUMPEL CARL H | BELL TELEPHONE LABOR INC |
| 2033917 | March 17, 1936 | Electric wave amplifying system | BLACK HAROLD S | BELL TELEPHONE LABOR INC |
| 2035280 | March 24, 1936 | Coin collector | SHANN OSCAR A | BELL TELEPHONE LABOR INC |
| 2035263 | March 24, 1936 | Volume control system | CUSHMAN ROBERT W ; HILL HENRY E | BELL TELEPHONE LABOR INC |
| 2035261 | March 24, 1936 | Electrical wave filter | CICCOLELLA DAVID F | BELL TELEPHONE LABOR INC |
| 2035258 | March 24, 1936 | Wave filter | BODE HENDRIK W. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2034928 | March 24, 1936 | Cable shield | ST JOHN EVERETT | BELL TELEPHONE LABOR INC |
| 2034883 | March 24, 1936 | Telephone system | SCUDDER FREDERICK J | BELL TELEPHONE LABOR INC |
| 2034881 | March 24, 1936 | Electromagnetic relay circuits | SCHEER WILLIAM H | BELL TELEPHONE LABOR INC |
| 2034879 | March 24, 1936 | Resilience and stiffness testing device | RONCI VICTOR L ; HALE DOUGLAS A S | BELL TELEPHONE LABOR INC |
| 2034874 | March 24, 1936 | Signaling system | LOW FRANK K | BELL TELEPHONE LABOR INC |
| 2034872 | March 24, 1936 | Phonograph reproducer | KELLER ARTHUR C | BELL TELEPHONE LABOR INC |
| 2034866 | March 24, 1936 | Switching device | HARVEY WILLIAM H | BELL TELEPHONE LABOR INC |
| 2034857 | March 24, 1936 | Carrier repeater system | BLACK HAROLD S | BELL TELEPHONE LABOR INC |
| 2034856 | March 24, 1936 | Carrier wave transmission system | BLACK HAROLD S | BELL TELEPHONE LABOR INC |
| 2034846 | March 24, 1936 | Telephone system | STOKELY RAY L | BELL TELEPHONE LABOR INC |
| 2034760 | March 24, 1936 | Electrooptical image production | IVES HERBERT E | BELL TELEPHONE LABOR INC |
| 2034708 | March 24, 1936 | Remote control apparatus | BROWNE BENNIE O ; HOWARD MORRISON | BELL TELEPHONE LABOR INC |
| 2034703 | March 24, 1936 | Transmission control in signaling systems | METZGER FREDERICK W | BELL TELEPHONE LABOR INC |
| 2036079 | March 31, 1936 | Circuit for voice frequency ringing and for voice frequency current | PULLIS GEORGE A | BELL TELEPHONE LABOR INC |
| 2036078 | March 31, 1936 | Generator of interrupted wave | PRUDEN HAROLD M | BELL TELEPHONE LABOR INC |
| 2036059 | March 31, 1936 | Testing equipment | LANG WILMARTH Y | BELL TELEPHONE LABOR INC |
| 2036055 | March 31, 1936 | Telephone system | KOECHLING CHARLES D | BELL TELEPHONE LABOR INC |
| 2036045 | March 31, 1936 | Shielding | HARRIS HENRY J | BELL TELEPHONE LABOR INC |
| 2036037 | March 31, 1936 | Telephone call transmitter | GOFF HAROLD W | BELL TELEPHONE LABOR INC |
| 2036023 | March 31, 1936 | Telephone system | CURL HERBERT C | BELL TELEPHONE LABOR INC |
| 2036010 | March 31, 1936 | Mounting for acoustic devices | ATKINS GEORGE E | BELL TELEPHONE LABOR INC |
| 2035473 | March 31, 1936 | Phonograph | HARRISON HENRY C | BELL TELEPHONE LABOR INC |
| 2037471 | April 14, 1936 | Electrooptical system | IVES HERBERT E ; FRANK GRAY | BELL TELEPHONE LABOR INC |
| 2037193 | April 14, 1936 | Teletypewriter switchboard | BURGESS ALFRED A ; KNOWLTON ALFRED D | BELL TELEPHONE LABOR INC |
| 2037187 | April 14, 1936 | Sound translating device | WENTE EDWARD C | BELL TELEPHONE LABOR INC |
| 2037185 | April 14, 1936 | Sound translating device | THURAS ALBERT L | BELL TELEPHONE LABOR INC |
| 2037183 | April 14, 1936 | Carrier line power supply | STRIEBY MAURICE E | BELL TELEPHONE LABOR INC |
| 2037174 | April 14, 1936 | Coin collector | MILLS PERCY E ; SHANN OSCAR A | BELL TELEPHONE LABOR INC |
| 2037171 | April 14, 1936 | Wave filter | LANE CLARENCE E | BELL TELEPHONE LABOR INC |
| 2037167 | April 14, 1936 | Electrooptical system | IVES HERBERT E | BELL TELEPHONE LABOR INC |
| 2037166 | April 14, 1936 | Electrooptical system | HEFELE JOHN R | BELL TELEPHONE LABOR INC |
| 2037165 | April 14, 1936 | Vibration translating device | HARRISON HENRY C ; KELLER ARTHUR C ; POLLARD CHARLES E | BELL TELEPHONE LABOR INC |
| 2037162 | April 14, 1936 | Camera supporting and controlling device | GENT EDGAR W | BELL TELEPHONE LABOR INC |
| 2037161 | April 14, 1936 | Apparatus for the optical calibration of timepieces | FETTER CHARLES H ; MORTON EDMUND R ; STOLLER HUGH M | ELECTRICAL RES PROD INC BELL TELEPHONE LABOR INC |
| 2038303 | April 21, 1936 | Signaling system | MATTHIES WILLIAM H | BELL TELEPHONE LABOR INC |
| 2038279 | April 21, 1936 | Coin collecting apparatus | GIERTSEN OYVIND N | BELL TELEPHONE LABOR INC |
| 2038277 | April 21, 1936 | Electrical meter | GENT EDGAR W | BELL TELEPHONE LABOR INC |
| 2038246 | April 21, 1936 | Asymmetrical conducting device | SMITH GEORGE O | BELL TELEPHONE LABOR INC |
| 2038240 | April 21, 1936 | Transmission system | SCHELKUNOFF SERGEI A | BELL TELEPHONE LABOR INC |
| 2038222 | April 21, 1936 | Telephone system | KING GERALD V | BELL TELEPHONE LABOR INC |
| 2038216 | April 21, 1936 | Support for vibration translating devices | HARRISON HENRY C ; KELLER ARTHUR C | BELL TELEPHONE LABOR INC |
| 2038202 | April 21, 1936 | Carrier wave system | WEIS JR CHARLES L | BELL TELEPHONE LABOR INC |
| 2038201 | April 21, 1936 | Lock | SHANN OSCAR A | BELL TELEPHONE LABOR INC |
| 2038199 | April 21, 1936 | Signal transmission circuit | RESSLER RALPH E | BELL TELEPHONE LABOR INC |
| 2039015 | April 28, 1936 | Telephone system | MATTHIES WILLIAM H | BELL TELEPHONE LABOR INC |
| 2039001 | April 28, 1936 | Testing system | HURST GEORGE A ; RETALLACK JOHN B | BELL TELEPHONE LABOR INC |
| 2038992 | April 28, 1936 | Modulating system for ultra short waves | CHAFFEE JOSEPH G | BELL TELEPHONE LABOR INC |
| 2039668 | May 5, 1936 | Telephone system | STOKELY RAY L | BELL TELEPHONE LABOR INC |
| 2039655 | May 5, 1936 | Method of outgassing and purifying electrically conductive bodies | MENDENHALL HALLAM E | BELL TELEPHONE LABOR INC |
| 2039654 | May 5, 1936 | Telephone system | MASSONNEAU ROBERT F | BELL TELEPHONE LABOR INC |
| 2039644 | May 5, 1936 | Selective switch | GLEASON DANIEL H ; REDMOND FREDERIC J | BELL TELEPHONE LABOR INC |
| 2039640 | May 5, 1936 | Switching system | FERGUSON JAMES G | BELL TELEPHONE LABOR INC |
| 2039637 | May 5, 1936 | Electric discharge device | DIMOND THOMAS L | BELL TELEPHONE LABOR INC |
| 2039631 | May 5, 1936 | Test circuit | ORFEO CESAREO | BELL TELEPHONE LABOR INC |
| 2039630 | May 5, 1936 | Selective switch | BURWELL JOHN A | BELL TELEPHONE LABOR INC |
| 2039629 | May 5, 1936 | Telegraph repeater | BURTON EVERETT T | BELL TELEPHONE LABOR INC |
| 2039625 | May 5, 1936 | Acoustic device | NELSON BLOUNT | BELL TELEPHONE LABOR INC |
| 2040334 | May 12, 1936 | Cross bar switch | REYNOLDS JOHN N | BELL TELEPHONE LABOR INC |
| 2040316 | May 12, 1936 | Telephone system | LAMBERTY FREDERICK R ; DAMME LOUIS E VAN | BELL TELEPHONE LABOR INC |
| 2040314 | May 12, 1936 | Treatment of rubber | KEMP ARCHIE R | BELL TELEPHONE LABOR INC |
| 2040291 | May 12, 1936 | Telephone system | BONOMI FELIX A | BELL TELEPHONE LABOR INC |
| 2041487 | May 19, 1936 | Artificial larynx | RIESZ ROBERT R | BELL TELEPHONE LABOR INC |
| 2041378 | May 19, 1936 | High frequency transmission system | SMITH PHILLIP H | BELL TELEPHONE LABOR INC |
| 2041157 | May 19, 1936 | Acoustic device | THURAS ALBERT L | BELL TELEPHONE LABOR INC |
| 2041127 | May 19, 1936 | Television | FRANK GRAY | BELL TELEPHONE LABOR INC |
| 2041122 | May 19, 1936 | Transmission control system | FAY CLIFFORD E | BELL TELEPHONE LABOR INC |
| 2041100 | May 19, 1936 | Electrical connecter | WILSON JR HENRY D | BELL TELEPHONE LABOR INC |
| 2041098 | May 19, 1936 | Wave transmission network | HORACE WHITTLE | BELL TELEPHONE LABOR INC |
| 2041096 | May 19, 1936 | Telephone system | STOKELY RAY L | BELL TELEPHONE LABOR INC |
| 2041090 | May 19, 1936 | Grouping circuit | SAUL GEORGE N ; SHIEL JOHN B | BELL TELEPHONE LABOR INC |
| 2041084 | May 19, 1936 | Telephone system | OSCAR MYERS | BELL TELEPHONE LABOR INC |
| 2041083 | May 19, 1936 | Telephone system | OSCAR MYERS | BELL TELEPHONE LABOR INC |
| 2041888 | May 26, 1936 | Coin collector apparatus | WHEELER CLYDE H | BELL TELEPHONE LABOR INC |
| 2041879 | May 26, 1936 | Telephone system | ULRICH HORACE W | BELL TELEPHONE LABOR INC |
| 2041875 | May 26, 1936 | Multiple speed motor | STOLLER HUGH M | BELL TELEPHONE LABOR INC |
| 2041873 | May 26, 1936 | Switching system | SPENCER THOMAS A | BELL TELEPHONE LABOR INC |
| 2041855 | May 26, 1936 | Frequency control | OHL RUSSELL S | BELL TELEPHONE LABOR INC |
| 2041850 | May 26, 1936 | Detachable hinge | MELICK JOHN M | BELL TELEPHONE LABOR INC |
| 2041822 | May 26, 1936 | Electrooptical system | DOWD ANDREW D | BELL TELEPHONE LABOR INC |
| 2041802 | May 26, 1936 | Electron emitter | WILSON JAMES R ; ACKER JOHN T ; HARTMAN CHARLES D | BELL TELEPHONE LABOR INC |
| 2042869 | June 2, 1936 | Code calling system | SMITH PERCY C | BELL TELEPHONE LABOR INC |
| 2042848 | June 2, 1936 | Cabinet | HORN IRVIN R | BELL TELEPHONE LABOR INC |
| 2042844 | June 2, 1936 | Coin receptacle | HARVEY WILLIAM H | BELL TELEPHONE LABOR INC |
| 2042840 | June 2, 1936 | Storage battery | HARING HORACE E | BELL TELEPHONE LABOR INC |
| 2042828 | June 2, 1936 | Telephone system | BUCHANAN RUSSELL B ; KILLE LINDLEY A | BELL TELEPHONE LABOR INC |
| 2042822 | June 2, 1936 | Telephone transmitter | BENNETT ARTHUR F ; TUFFNELL WILLIAM L | BELL TELEPHONE LABOR INC |
| 2042821 | June 2, 1936 | Telephone transmitter | BENNETT ARTHUR F | BELL TELEPHONE LABOR INC |
| 2042562 | June 2, 1936 | Telephone system | STOKELY RAY L | BELL TELEPHONE LABOR INC |
| 2042561 | June 2, 1936 | Telephone system | STOKELY RAY L | BELL TELEPHONE LABOR INC |
| 2042530 | June 2, 1936 | Submarine signaling cable | JACOBS OLIVER B | BELL TELEPHONE LABOR INC |
| 2043355 | June 9, 1936 | Carrier telegraph receiver | MELHUISH LAWRENCE E | BELL TELEPHONE LABOR INC |
| 2043354 | June 9, 1936 | Film feeding mechanism | MALLINA RUDOLPH F | BELL TELEPHONE LABOR INC |
| 2043348 | June 9, 1936 | Communication system | CURL HERBERT C | BELL TELEPHONE LABOR INC |
| 2043346 | June 9, 1936 | Submarine cable loading coil | BUCKLEY OLIVER E | BELL TELEPHONE LABOR INC |
| 2043345 | June 9, 1936 | Wave transmission network | STEPHEN BOBIS | BELL TELEPHONE LABOR INC |
| 2044369 | June 16, 1936 | Electron discharge device | SAMUEL ARTHUR L | BELL TELEPHONE LABOR INC |
| 2044061 | June 16, 1936 | Radio repeating system for ultra-short waves | CRAWFORD ARTHUR B | BELL TELEPHONE LABOR INC |
| 2044047 | June 16, 1936 | Wave transmission network | STEPHEN BOBIS | BELL TELEPHONE LABOR INC |
| 2044037 | June 16, 1936 | Coin collector apparatus | WHEELER CLYDE H | BELL TELEPHONE LABOR INC |
| 2044000 | June 16, 1936 | Mechanical vibrating system | HEISING RAYMOND A | BELL TELEPHONE LABOR INC |
| 2045450 | June 23, 1936 | Signaling system | DIMOND THOMAS L | BELL TELEPHONE LABOR INC |
| 2045438 | June 23, 1936 | Control apparatus | CIOFFI PAUL P | BELL TELEPHONE LABOR INC |
| 2045414 | June 23, 1936 | Timing apparatus | RUMPEL CARL H | BELL TELEPHONE LABOR INC |
| 2045409 | June 23, 1936 | Electromagnet | REDMOND FREDERIC J ; REYNOLDS JOHN N | BELL TELEPHONE LABOR INC |
| 2045402 | June 23, 1936 | Signaling system | OSCAR MYERS | BELL TELEPHONE LABOR INC |
| 2044763 | June 23, 1936 | Maintaining cable sheath | BOUTON GEORGE M ; SCHUMACHER EARLE E | BELL TELEPHONE LABOR INC |
| 2046057 | June 30, 1936 | Multiplex transmission system | BURTON EVERETT T | BELL TELEPHONE LABOR INC |
| 2046020 | June 30, 1936 | Electric discharge device | GARGAN JOHN O ; YOUNG FREDERICK W | BELL TELEPHONE LABOR INC |
| 2045991 | June 30, 1936 | Wave filter | MASON WARREN P | BELL TELEPHONE LABOR INC |
| 2045971 | June 30, 1936 | Switching mechanism | STOCKFLETH SIGURD J | BELL TELEPHONE LABOR INC |
| 2046723 | July 7, 1936 | Film driving apparatus | BROWNSCOMBE PHILIP J | BELL TELEPHONE LABOR INC |
| 2046719 | July 7, 1936 | Protective system | BLOUNT FRANK E | BELL TELEPHONE LABOR INC |
| 2046707 | July 7, 1936 | Electric conductor | SWOBODA ADOLPH R | BELL TELEPHONE LABOR INC |
| 2046705 | July 7, 1936 | Electromagnetic device | STOLLER HUGH M | BELL TELEPHONE LABOR INC |
| 2046704 | July 7, 1936 | Owen bridge | THADDEUS SLONCZEWSKI | BELL TELEPHONE LABOR INC |
| 2046698 | July 7, 1936 | Signaling device | POWER JAMES R | BELL TELEPHONE LABOR INC |
| 2046697 | July 7, 1936 | Record projector | HARRY PFANNENSTICHL | BELL TELEPHONE LABOR INC |
| 2046695 | July 7, 1936 | Record projector | MOTTRAM ELLIOTT T | BELL TELEPHONE LABOR INC |
| 2046686 | July 7, 1936 | Asymmetrical electrical conductor | KANNENBERG WALTER F | BELL TELEPHONE LABOR INC |
| 2047796 | July 14, 1936 | Resistance device | OGG ROBERT A | BELL TELEPHONE LABOR INC |
| 2047782 | July 14, 1936 | Electrical measuring system | JENSEN AXEL G | BELL TELEPHONE LABOR INC |
| 2047781 | July 14, 1936 | Telephone supervisory system | HILL HENRY E | BELL TELEPHONE LABOR INC |
| 2047758 | July 14, 1936 | Art of securing adherence of finishes to metal and other materials | WERRING WALTER W ; HUXHAM TREVOR S | BELL TELEPHONE LABOR INC |
| 2047733 | July 14, 1936 | Constant speed drive | HARRISON HENRY C | BELL TELEPHONE LABOR INC |
| 2047731 | July 14, 1936 | Inductive device | GREENIDGE RALPH M C | BELL TELEPHONE LABOR INC |
| 2047729 | July 14, 1936 | Transmission control in two-way signaling systems | FISHER HAROLD J | BELL TELEPHONE LABOR INC |
| 2047387 | July 14, 1936 | Holder for piezoelectric crystals | SCOTT HERBERT J | BELL TELEPHONE LABOR INC |
| 2047383 | July 14, 1936 | Switching mechanism | REYNOLDS JOHN N | BELL TELEPHONE LABOR INC |
| 2047371 | July 14, 1936 | Photoelectric tube | IVES HERBERT E | BELL TELEPHONE LABOR INC |
| 2048539 | July 21, 1936 | Telephone coin collector | CURRAN STANLEY T | BELL TELEPHONE LABOR INC |
| 2048508 | July 21, 1936 | Pneumatic sound reproducer | MALLINA RUDOLPH F | BELL TELEPHONE LABOR INC |
| 2048506 | July 21, 1936 | Telephone system | PHILIP HUSTA | BELL TELEPHONE LABOR INC |
| 2048500 | July 21, 1936 | Sound recording | GLUNT OMER M | BELL TELEPHONE LABOR INC |
| 2048497 | July 21, 1936 | Motion picture film | ELMER LLOYD A ; SHEA TIMOTHY E | BELL TELEPHONE LABOR INC |
| 2049195 | July 28, 1936 | Gain control circuit | CHESNUT ROY W | BELL TELEPHONE LABOR INC |
| 2049183 | July 28, 1936 | Telephone system | ULRICH HORACE W | BELL TELEPHONE LABOR INC |
| 2049179 | July 28, 1936 | Frequency generator system | BURRELL STALLARD | BELL TELEPHONE LABOR INC |
| 2049177 | July 28, 1936 | Frequency generating system | RUMPEL CARL H | BELL TELEPHONE LABOR INC |
| 2049174 | July 28, 1936 | Telephone coin collector | PARSONS LOREN E | BELL TELEPHONE LABOR INC |
| 2049170 | July 28, 1936 | Coin collector apparatus | MILLS PERCY E. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2049948 | August 4, 1936 | Protective means for electric circuits | CUSHMAN ROBERT A ; YOUNG LAWRENCE G | BELL TELEPHONE LABOR INC |
| 2049941 | August 4, 1936 | Transmission control in two-way signaling systems | BJORNSON BJORN G | BELL TELEPHONE LABOR INC |
| 2049917 | August 4, 1936 | Electrooptical system | MALLINA RUDOLPH F | BELL TELEPHONE LABOR INC |
| 2050722 | August 11, 1936 | Telephone system | MCKIM JAMES B | BELL TELEPHONE LABOR INC |
| 2050703 | August 11, 1936 | Transmission system regulation | JOHNSON JOHN B | BELL TELEPHONE LABOR INC |
| 2050633 | August 11, 1936 | Constant temperature device | BURRELL STALLARD | BELL TELEPHONE LABOR INC |
| 2050610 | August 11, 1936 | Telephone toll switching | JACOBS OLIVER B | BELL TELEPHONE LABOR INC |
| 2050601 | August 11, 1936 | Method of treating copper base alloys | ELLIS WILLIAM C | BELL TELEPHONE LABOR INC |
| 2050363 | August 11, 1936 | Synchronizing system | MORTON EDMUND R | BELL TELEPHONE LABOR INC |
| 2052338 | August 25, 1936 | Filtering circuit | BUDENBOM HORACE T | BELL TELEPHONE LABOR INC |
| 2052319 | August 25, 1936 | Switching device | SIEGMUND HUMPHREYS O | BELL TELEPHONE LABOR INC |
| 2052298 | August 25, 1936 | Electrooptical system | IVES HERBERT E | BELL TELEPHONE LABOR INC |
| 2052273 | August 25, 1936 | Remote control circuit | BLOUNT FRANK E | BELL TELEPHONE LABOR INC |
| 2054008 | September 8, 1936 | Electrical protective system | KASSON SWART LELAND ; DRENNER TEBO JULIAN | AMERICAN TELEPHONE & TELEGRAPH BELL TELEPHONE LABOR INC |
| 2055208 | September 22, 1936 | Electrical wave production | RUMPEL CARL H | BELL TELEPHONE LABOR INC |
| 2055189 | September 22, 1936 | Telephone loading unit and method of balancing same | WORCESTER JOSEPH A | BELL TELEPHONE LABOR INC |
| 2055187 | September 22, 1936 | Phonograph reproducer | LEONARD VIETH | BELL TELEPHONE LABOR INC |
| 2055185 | September 22, 1936 | Method of forming containers | TEMPLETON BRYCE O | BELL TELEPHONE LABOR INC |
| 2054794 | September 22, 1936 | Wave filter | DIETZOLD ROBERT L. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2054790 | September 22, 1936 | Signaling system | CURTIS AUSTEN M | BELL TELEPHONE LABOR INC |
| 2054789 | September 22, 1936 | Communication system | CHESNUT ROY W ; CRANE RALPH E ; HUBER GEORGE H | BELL TELEPHONE LABOR INC |
| 2055662 | September 29, 1936 | Modulating system | MATHES ROBERT C | BELL TELEPHONE LABOR INC |
| 2055659 | September 29, 1936 | Telephone system | JOHNSTON DONALD F | BELL TELEPHONE LABOR INC |
| 2055656 | September 29, 1936 | Switching device | FERGUSON JAMES G | BELL TELEPHONE LABOR INC |
| 2055655 | September 29, 1936 | Electron lens | DAVISSON CLINTON J | BELL TELEPHONE LABOR INC |
| 2055652 | September 29, 1936 | Telephone system | BUTZ EDWARD D | BELL TELEPHONE LABOR INC |
| 2055647 | September 29, 1936 | Telephone line system | BOWNE LANGFORD J | BELL TELEPHONE LABOR INC |
| 2055638 | September 29, 1936 | Communication system | STAPLES ELLIOT M | BELL TELEPHONE LABOR INC |
| 2056912 | October 6, 1936 | Circuits for resetting gaseous discharge devices | SWART LELAND K | BELL TELEPHONE LABOR INC |
| 2056306 | October 6, 1936 | Alarm system | TRUCKSESS DAVID E | BELL TELEPHONE LABOR INC |
| 2056300 | October 6, 1936 | Acoustic device | SHOWER EDMUND G | BELL TELEPHONE LABOR INC |
| 2056295 | October 6, 1936 | Electrical artificial larynx | RIESZ ROBERT R | BELL TELEPHONE LABOR INC |
| 2056284 | October 6, 1936 | Signaling method and apparatus | MACCOLL LE ROY A | BELL TELEPHONE LABOR INC |
| 2056281 | October 6, 1936 | Wave filter | EMORY LAKATOS | BELL TELEPHONE LABOR INC |
| 2056242 | October 6, 1936 | Electromagnetic switching device | ANDERSON FRITHIOF B | BELL TELEPHONE LABOR INC |
| 2056235 | October 6, 1936 | Resetting circuit for trigger devices | SWART LELAND K | BELL TELEPHONE LABOR INC |
| 2058256 | October 20, 1936 | Gas pressure alarm contactor | PIKE VERNON B | BELL TELEPHONE LABOR INC |
| 2058216 | October 20, 1936 | Signaling system | DIMOND THOMAS L | BELL TELEPHONE LABOR INC |
| 2058212 | October 20, 1936 | Artificial larynx | BURCHETT GEORGE W | BELL TELEPHONE LABOR INC |
| 2058210 | October 20, 1936 | Wave transmission networks | BODE HENDRIK W. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2058208 | October 20, 1936 | Acoustic device | BLATTNER DAVID G | BELL TELEPHONE LABOR INC |
| 2058198 | October 20, 1936 | Two-way carrier wave system | HORACE WHITTLE | BELL TELEPHONE LABOR INC |
| 2058898 | October 27, 1936 | Electrooptical image production | MATHES ROBERT C | BELL TELEPHONE LABOR INC |
| 2058883 | October 27, 1936 | Electrooptical transmission | IVES HERBERT E ; VICTOR SUBRIZI | BELL TELEPHONE LABOR INC |
| 2058882 | October 27, 1936 | Electrooptical image production | IVES HERBERT E ; MATHES ROBERT C | BELL TELEPHONE LABOR INC |
| 2058641 | October 27, 1936 | Indicator device | THADDEUS SLONEZEWSKI | BELL TELEPHONE LABOR INC |
| 2058605 | October 27, 1936 | Printing telegraph system | LANE CUTHBERT C | BELL TELEPHONE LABOR INC |
| 2058602 | October 27, 1936 | Coin gauging apparatus | KUHN JOHN J | BELL TELEPHONE LABOR INC |
| 2058601 | October 27, 1936 | Teletypewriter system | KRECEK JOSEPH A ; MUNRO CHARLES C | BELL TELEPHONE LABOR INC |
| 2058594 | October 27, 1936 | Protective device | KELSAY LEROY W | BELL TELEPHONE LABOR INC |
| 2058579 | October 27, 1936 | Gauging device | ERICKSON ELMER C | BELL TELEPHONE LABOR INC |
| 2058561 | October 27, 1936 | Gain control regulator | HOWARD BROADWELL | BELL TELEPHONE LABOR INC |
| 2058555 | October 27, 1936 | Acoustic device | BETTS WALTER L ; JONES EDWARD H | BELL TELEPHONE LABOR INC |
| 2059588 | November 3, 1936 | Acoustic device | KUHN JOHN J. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2059188 | November 3, 1936 | Cable grip link | ALFORD EDWARD L | BELL TELEPHONE LABOR INC |
| 2060261 | November 10, 1936 | Telephone system | STOKELY RAY L. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2060235 | November 10, 1936 | Relay | MILLER DANIEL D. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2060229 | November 10, 1936 | Signaling system | LOW FRANK K. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2060222 | November 10, 1936 | Interpolating system | KNOOP WILLIAM A. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2060184 | November 10, 1936 | Telephone system | DIMOND THOMAS L. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2060176 | November 10, 1936 | Switch | CARPENTER WARREN W. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2061276 | November 17, 1936 | Treatment of rubber | INGMANSON JOHN H | BELL TELEPHONE LABOR INC |
| 2061273 | November 17, 1936 | Repertory dial | GREEN IRVING W | BELL TELEPHONE LABOR INC |
| 2061255 | November 17, 1936 | Electric discharge device | ROCKWOOD JR GEORGE H | BELL TELEPHONE LABOR INC |
| 2061254 | November 17, 1936 | Electric discharge device | ROCKWOOD JR GEORGE H | BELL TELEPHONE LABOR INC |
| 2060914 | November 17, 1936 | Electrical conductor | WEAVER LEO L ; WEBBER CARROLL A | WESTERN ELECTRIC CO BELL TELEPHONE LABOR INC |
| 2060905 | November 17, 1936 | Asymmetrical conductor | SMITH GEORGE O | BELL TELEPHONE LABOR INC |
| 2060898 | November 17, 1936 | Control circuits | ROSENE VICTOR E | BELL TELEPHONE LABOR INC |
| 2060843 | November 17, 1936 | Transmission system | ABRAHAM LEONARD G ; GRENELL ARTHUR F | AMERICAN TELEPHONE & TELEGRAPH BELL TELEPHONE LABOR INC |
| 2061594 | November 24, 1936 | Electron discharge device | SAMUEL ARTHUR L | BELL TELEPHONE LABOR INC |
| 2061555 | November 24, 1936 | Transmission control in two-way signaling systems | BJORNSON BJORN G | BELL TELEPHONE LABOR INC |
| 2062892 | December 1, 1936 | Electron discharge device | LAICO JOSEPH P. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2062478 | December 1, 1936 | Acoustic device | RIESZ ROBERT R. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2062444 | December 1, 1936 | Telephone system | CESAREO ORFEO | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2062334 | December 1, 1936 | Electron discharge device | SAMUEL ARTHUR L. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2062319 | December 1, 1936 | Electron discharge device | LAICO JOSEPH P. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2062302 | December 1, 1936 | Electron discharge device | FAY CLIFFORD E. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2062301 | December 1, 1936 | Electron discharge device | FAY CLIFFORD E. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2063342 | December 8, 1936 | Electron discharge device | SAMUEL ARTHUR L. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2063341 | December 8, 1936 | Electron discharge device | SAMUEL ARTHUR L. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2063338 | December 8, 1936 | Burnishing tool | PRITCHARD WILLIAM T. ; SAUNDERS ARTHUR R. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2063334 | December 8, 1936 | Transmission system | NORMAN NATHANIEL C. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2063323 | December 8, 1936 | Telephone message recorder | MALLINA RUDOLPH F. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2063314 | December 8, 1936 | Electron discharge device | JOHNSON JOHN B. ; WEINHART HOWARD W. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2063308 | December 8, 1936 | Call transmitter | GOFF HAROLD W. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2064475 | December 15, 1936 | Electrooptical scanning system | IVES HERBERT E. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2064320 | December 15, 1936 | Electron discharge device | RONCI VICTOR L. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2064319 | December 15, 1936 | Signaling system | PRUDEN HAROLD M | BELL TELEPHONE LABOR INC |
| 2064290 | December 15, 1936 | Support for wires | CAMPBELL THADDEUS C. ; WHEELER CLYDE H. ; BOWLY HEYWARD W. | BELL TELEPHONE LABORATORIES, INCORPORATED WESTERN ELECTRIC COMPANY, INCORPORATED |
| 2064287 | December 15, 1936 | Coil winding machine | BIELING CARL A. ; RICHARD CHARLES D. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2064280 | December 15, 1936 | Coin collecting apparatus | WHEELER CLYDE H. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2064274 | December 15, 1936 | Recording mechanism | SHANN OSCAR A. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2063998 | December 15, 1936 | Electro-optical system | GRAY FRANK | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2064958 | December 22, 1936 | Signaling system for radiotelephones | TAYLOR EDMUND R. ; TAYLOR CHARLES C. ; WADSWORTH PAUL W. | BELL TELEPHONE LABORATORIES, INCORPORATED EDMUND R. TAYLOR CHARLES C. TAYLOR AMERICAN TELEPHONE AND TELEGRAPH COMPANY |
| 2065907 | December 29, 1936 | Translating device | PERREAULT GEORGE E. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2065905 | December 29, 1936 | Signaling system | NEELY THOMAS H. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2065897 | December 29, 1936 | Fuse panel | KENNER ARTHUR ; SMITH CHARLES A. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2065894 | December 29, 1936 | Telephone system | HOVLAND HENRY | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2065883 | December 29, 1936 | Intercommunicating telephone system | BEAUMONT WILLIAM M. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2066539 | January 5, 1937 | Control circuit | ROSENE VICTOR E. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2066528 | January 5, 1937 | Synchronous control of oscillators | HARPER AUGUSTUS E. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2066525 | January 5, 1937 | Conductor | GILBERT JOHN J. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2066520 | January 5, 1937 | Telegraph repeater | CRAMER WALTER W. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2066515 | January 5, 1937 | Method of heat treating magnetic materials | BISHOP WALTER M. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2066514 | January 5, 1937 | Gain control circuits | BEYER JESSE W ; TERRY DONALD M | BELL TELEPHONE LABOR INC |
| 2066511 | January 5, 1937 | Wiring device | ARLT HERBERT G | BELL TELEPHONE LABOR INC |
| 2066502 | January 5, 1937 | Telephone system | WHITNEY WILEY | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2066333 | January 5, 1937 | Wave amplification and generation | CARUTHERS ROBERT S. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2066332 | January 5, 1937 | Carrier wave transmission system | CARUTHERS ROBERT S. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2066325 | January 5, 1937 | Transmission control in two-way signaling system | BJORNSON BJORN G. ; BRYANT NEWTON W. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2067529 | January 12, 1937 | Electron discharge device | HEISING RAYMOND A. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2067520 | January 12, 1937 | Circuit for oscillographs or the like | CURTIS AUSTEN M. ; WOOD IRA E. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2067519 | January 12, 1937 | Control circuits | COLE IRA E. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2067518 | January 12, 1937 | Telephone system | CARPENTER WARREN W. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2067502 | January 12, 1937 | Art of duplicating phonograph records | POLLARD CHARLES E ; RUSSELL ALEXANDER G | BELL TELEPHONE LABOR INC |
| 2067500 | January 12, 1937 | Regulator system | MORTON EDMUND R. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2068351 | January 19, 1937 | Grid controlled rectifier circuit | ROCKWOOD JR GEORGE H | BELL TELEPHONE LABOR INC |
| 2068328 | January 19, 1937 | Coin controlled apparatus | HOYT FREDERICK A. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2068324 | January 19, 1937 | Short-wave electron tube circuit | HEISING RAYMOND A. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2068320 | January 19, 1937 | Inductance device | GRANT DWIGHT W. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2068316 | January 19, 1937 | Alternating current regulator | FARKAS SAMUEL FRANCIS | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2069251 | February 2, 1937 | Interconnecting telegraph repeater system | KINKEAD FULLERTON S. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2069224 | February 2, 1937 | Interconnecting telegraph repeater system | CUMMINGS GEORGE C. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2069223 | February 2, 1937 | Interconnecting telegraph repeater system | CUMMINGS GEORGE C. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2069867 | February 9, 1937 | Electron emitter | WILSON JAMES R. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2069841 | February 9, 1937 | Safety device for phonographs | MASSONNEAU ROBERT F. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2069838 | February 9, 1937 | Communication system | KNOOP WILLIAM A. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2069835 | February 9, 1937 | Coating apparatus | KELLER ARTHUR C. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2069832 | February 9, 1937 | Electric discharge device | HOLDAWAY VIVIAN L. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2069827 | February 9, 1937 | Record clamping means | HARRISON HENRY C. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2069825 | February 9, 1937 | Alternating current regulator | FARKAS SAMUEL F. ; HILTON LINWOOD B. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2069817 | February 9, 1937 | Acoustic device | CLARKE HARRY R. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2069814 | February 9, 1937 | Electric discharge device | BOND DONALD S. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2069810 | February 9, 1937 | Sound recording and reproducing system | BOND DONALD S. | LEILA B. ARNOLD BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2071078 | February 16, 1937 | Signaling system | LOW FRANK K. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2071075 | February 16, 1937 | Telephone system | KOECHLING CHARLES D. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2071072 | February 16, 1937 | Signaling system | JOHNSON LEWIS H. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2070678 | February 16, 1937 | Coaxial conductor system | ODARENKO TODOS M. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2070677 | February 16, 1937 | Transmission network | NORTON EDWARD L. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2070671 | February 16, 1937 | Repeater testing | MEISSNER CHARLES R | BELL TELEPHONE LABOR INC |
| 2070668 | February 16, 1937 | Wave transmission network | LUNDRY WALTER R. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2070666 | February 16, 1937 | Modulating system | LLEWELLYN FREDERICK B. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2070656 | February 16, 1937 | Frequency-selective transmission circuit | GROSSMAN ALEXANDER J. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2070642 | February 16, 1937 | Telephone system | BEAUMONT WILLIAM M. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2071547 | February 23, 1937 | Signaling system | LOW FRANK K. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2072478 | March 2, 1937 | Electrooptical system | GRAY FRANK | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2072476 | March 2, 1937 | Switching system | COLLINS CYRIL A. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2072462 | March 2, 1937 | Coin collector | MILLS PERCY E. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2072455 | March 2, 1937 | Electrooptical system | KANNENBERG WALTER F. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2072434 | March 2, 1937 | Switching system | SPENCER THOMAS A. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2073508 | March 9, 1937 | Telephone system | WILLIAMS SAMUEL B. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2073468 | March 9, 1937 | Communication system | FITCH KARL E. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2073462 | March 9, 1937 | Terminating system for shielded circuits | CURTIS HAROLD E. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2073459 | March 9, 1937 | Temperature control system and method | THURSTON GEORGE M. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2072972 | March 9, 1937 | Coin collecting apparatus | WHEELER CLYDE H. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2072952 | March 9, 1937 | Mounting for electrical devices | JONES EDWARD H. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2072940 | March 9, 1937 | Telephone system | BOWNE LANGFORD J. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2072939 | March 9, 1937 | Mounting for electrical devices | BETTS WALTER L. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2073678 | March 16, 1937 | Cutting tool | BROUGHTON WILLIAM W. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2074446 | March 23, 1937 | Transmission regulation | WRIGHT SUMNER BISBEE | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2075783 | March 30, 1937 | Sound picture system | ROBERTS JOHN G. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2075536 | March 30, 1937 | Call transmitter | MILLER VICTOR F. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2075527 | March 30, 1937 | Telephone system | KORN FRANKLIN A. ; MYERS OSCAR | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2075523 | March 30, 1937 | Scanning device | IVES HERBERT E. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2075520 | March 30, 1937 | Tool | HARDESTY JAMES M. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2075519 | March 30, 1937 | Coin collector housing | GIERTSEN OYVIND N. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2075515 | March 30, 1937 | Resistance | FISHER JOSEPH R. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2075504 | March 30, 1937 | Remagnetizing device | CHEGWIDDEN RAYMOND A. ; HARAZIM STANLEY J. ; KUHN JOHN J. ; PETTIT IRVING C. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2075503 | March 30, 1937 | Reception of frequency modulated waves | CHAFFEE JOSEPH G. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2075499 | March 30, 1937 | Switching device | BUCH PETER E. ; HANSEN ARNOLD A. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2075488 | March 30, 1937 | Electromagnetic switching device | WAGAR HAROLD N. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2076248 | April 6, 1937 | Wave filter | NORTON EDWARD L. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2076229 | April 6, 1937 | Wave shaping system | DUNN HUGH K. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2076222 | April 6, 1937 | Directive radio system | BRUCE EDMOND | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2075975 | April 6, 1937 | Transmission regulation | BROOKS FRED A. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2075957 | April 6, 1937 | Electric wave translating device | PAYNE EDWARD B. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2075956 | April 6, 1937 | Electric wave translating system | PAYNE EDWARD B. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2075897 | April 6, 1937 | Signal distortion indicating and measuring device | HEARN RICHARD B. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2077193 | April 13, 1937 | Recording system | WENTE EDWARD C. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2077177 | April 13, 1937 | Electron discharge device | MCNALLY JAMES O. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2077172 | April 13, 1937 | Telegraph signal distortion measuring device | HEARN RICHARD B. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2077170 | April 13, 1937 | Acoustic device | HARRISON HENRY C. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2077160 | April 13, 1937 | Radio transmitter | JR. HENRY D. WILSON, | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2077156 | April 13, 1937 | Electron discharge device | RONCI VICTOR L. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2077936 | April 20, 1937 | Telegraph circuit | KINKEAD FULLERTON S. ; LOCKE GEORGE A. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2077926 | April 20, 1937 | Sound recording system | GIBSON ROBERT D. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2077925 | April 20, 1937 | Tape pulling mechanism | GENT EDGAR W. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2077917 | April 20, 1937 | Telegraph repeater | CUMMINGS GEORGE C. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2078974 | May 4, 1937 | Modulating system | RIESZ ROBERT R. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2080217 | May 11, 1937 | Apparatus and method for remedying crosstalk | WEAVER MYRON A. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2079697 | May 11, 1937 | Loading coil case | RANGES JOHN E. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2079694 | May 11, 1937 | Acoustic amplifier | LOVELL CLARENCE A. ; WEGEL RAYMOND L. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2079693 | May 11, 1937 | Sound reproducer | LOVELL CLARENCE A. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2079690 | May 11, 1937 | Method of making resistance devices | GRISDALE RICHARD O. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2079689 | May 11, 1937 | Repeating station for ocean cables | GORTON WILLIAM S. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2079685 | May 11, 1937 | Telegraph exchange system | FITCH KARL E. ; KINKEAD FULLERTON S. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2080491 | May 18, 1937 | Conducting system | KREISHER CLAUDE | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2080473 | May 18, 1937 | Loading coil case | GREENIDGE RALPH M.C. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2080459 | May 18, 1937 | Modulating system | CARUTHERS ROBERT S. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2081427 | May 25, 1937 | Electric communication cable | FIRTH NEAL V. ; HALL ARTHUR G. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2081425 | May 25, 1937 | High frequency transmission system | FAY CLIFFORD E. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2081422 | May 25, 1937 | Transmission control in signaling systems | BJORNSON BJORN G. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2081415 | May 25, 1937 | Electron emitter | VEAZIE EDMUND A. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2081411 | May 25, 1937 | Synchronous motor | STOLLER HUGH M ; MORTON EDMUND R | BELL TELEPHONE LABOR INC |
| 2081405 | May 25, 1937 | Wave filter | MASON WARREN P | BELL TELEPHONE LABOR INC |
| 2082339 | June 1, 1937 | Television system | IVES HERBERT E. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2082123 | June 1, 1937 | Circuit control arrangements | SAMUEL ARTHUR L. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2082120 | June 1, 1937 | Electron discharge device | RONCI VICTOR L. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2082110 | June 1, 1937 | Regulating system | LANGABEER HARVEY T | BELL TELEPHONE LABOR INC |
| 2082104 | June 1, 1937 | Testing system | GIBSON EARL S. ; HANSEN ARNOLD A. ; WORTH JOHN B. | BELL TELEPHONE LABORATORIES, INCORPORATED AMERICAN TELEPHONE AND TELEGRAPH COMPANY |
| 2082102 | June 1, 1937 | Resistance element | FISHER JOSEPH R. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2082099 | June 1, 1937 | Conductor support | CRUSER VICTOR I. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2082097 | June 1, 1937 | Telephone system | CESAREO ORFEO | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2082095 | June 1, 1937 | Ringer | BREDEHOFT HAROLD A. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2082091 | June 1, 1937 | Control knob | JR. WILLIAM J. ADAMS, | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2083495 | June 8, 1937 | Electrical indicating or measuring system | BLACK HAROLD S. ; EDSON JAMES O. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2083416 | June 8, 1937 | Radio direction finding system | AIKEN CHARLES B. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2083404 | June 8, 1937 | Telephone system | SAUL GEORGE N. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2083388 | June 8, 1937 | Tool for turning cable reels | MOORE CHARLES R | BELL TELEPHONE LABOR INC |
| 2083384 | June 8, 1937 | Relay structure | KUCH FREDERICK CARL | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2083382 | June 8, 1937 | Regulated rectifier circuits | JUTSON ROBERT P. ; TRUCKSESS DAVID E. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2083374 | June 8, 1937 | Recording and reproducing system | HARLEY JOHN B. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2083373 | June 8, 1937 | Measuring tool | HARDESTY JAMES M. ; LAWSON CLEMENT C. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2083346 | June 8, 1937 | Electronic discharge device | RONCI VICTOR L. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2083344 | June 8, 1937 | System and method of determining distances | NEWHOUSE RUSSELL C. ; TINUS WILLIAM C. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2083330 | June 8, 1937 | Electronic discharge device | HOLDAWAY VIVIAN L. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2084135 | June 15, 1937 | Amplifier circuits | FORD GAYLON T. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2084123 | June 15, 1937 | Loading coil case | BARDSLEY JOSEPH R. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2084121 | June 15, 1937 | Prepayment telephone system | ANDERSON EMIL N. ; BASCOM HENRY M. ; GETZ EMIL L. ; JR. GEORGE SANDALLS, | AMERICAN TELEPHONE AND TELEGRAPH COMPANY BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2084115 | June 15, 1937 | Control circuits | TERRY DONALD M. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2084105 | June 15, 1937 | Telephone control system | MYERS OSCAR | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2084104 | June 15, 1937 | Signaling system | MYERS OSCAR | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2085130 | June 29, 1937 | Acoustic device | SWICKARD ANDREW E | BELL TELEPHONE LABOR INC |
| 2085125 | June 29, 1937 | Radio transmitter | SHAW ROBERT C | BELL TELEPHONE LABOR INC |
| 2085117 | June 29, 1937 | Radio receiver | HOWARD MORRISON ; REICHLE WINFRIED E ; THAYER GORDON N | BELL TELEPHONE LABORATERIES IN |
| 2085094 | June 29, 1937 | Gas-filled tube circuits | GOODALL WILLIAM M. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2085093 | June 29, 1937 | Sheet holding means | GAUTHIER MARCEL C. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2085079 | June 29, 1937 | Cutting device | HOWARD BROADWELL | BELL TELEPHONE LABOR INC |
| 2085077 | June 29, 1937 | Insulator | FOX ARTHUR L ; HASKELL FREDERIC V ; STURZENEGGER WILLIAM C | BELL TELEPHONE LABOR INC |
| 2085073 | June 29, 1937 | Sound translating device | BOSTWICK LEE G | BELL TELEPHONE LABOR INC |
| 2086136 | July 6, 1937 | Method of manufacturing switches | REYNOLDS JOHN N | BELL TELEPHONE LABOR INC |
| 2086130 | July 6, 1937 | Telegraphone | HICKMAN CLARENCE N ; JACKSON HEIGHTS ; MALLINA RUDOLPH F | BELL TELEPHONE LABOR INC |
| 2086112 | July 6, 1937 | Ventilator | ATKINS GEORGE E | BELL TELEPHONE LABOR INC |
| 2086110 | July 6, 1937 | Repertory dialing device | ALLEN LAWRENCE H | BELL TELEPHONE LABOR INC |
| 2086106 | July 6, 1937 | Control circuits | WILSON IRA G | BELL TELEPHONE LABOR INC |
| 2086105 | July 6, 1937 | Gain control circuits | WILSON IRA G | BELL TELEPHONE LABOR INC |
| 2086101 | July 6, 1937 | Synchronization of engines | STOLLER HUGH M | BELL TELEPHONE LABOR INC |
| 2086649 | July 13, 1937 | Acoustic device | THURAS ALBERT L | BELL TELEPHONE LABOR INC |
| 2086638 | July 13, 1937 | Regenerative telegraph repeater | RASMUSSEN OSVALD E | BELL TELEPHONE LABOR INC |
| 2086630 | July 13, 1937 | Telephone receiver | MINER RUSSELL C | BELL TELEPHONE LABOR INC |
| 2086629 | July 13, 1937 | Shielded cable system | MEAD SALLIE P | BELL TELEPHONE LABOR INC |
| 2086628 | July 13, 1937 | Switching device | GLADSTONE MATEJKA | BELL TELEPHONE LABOR INC |
| 2086603 | July 13, 1937 | Neutralizing system | CASH CLAUDE C | BELL TELEPHONE LABOR INC |
| 2086602 | July 13, 1937 | Modulating system | CARUTHERS ROBERT S. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2086601 | July 13, 1937 | Modulating system | CARUTHERS ROBERT S | BELL TELEPHONE LABOR INC |
| 2086597 | July 13, 1937 | Wave filter | BLACKMAN RALPH B | BELL TELEPHONE LABOR INC |
| 2086579 | July 13, 1937 | Electron discharge device | SAMUEL ARTHUR L | BELL TELEPHONE LABOR INC |
| 2086578 | July 13, 1937 | Electron discharge device | SAMUEL ARTHUR L | BELL TELEPHONE LABOR INC |
| 2086540 | July 13, 1937 | Impulse circuit | DIMOND THOMAS L | BELL TELEPHONE LABOR INC |
| 2087327 | July 20, 1937 | Electron discharge device | MCNALLY JAMES O | BELL TELEPHONE LABOR INC |
| 2087326 | July 20, 1937 | Standard frequency system | MARRISON WARREN A | BELL TELEPHONE LABOR INC |
| 2087316 | July 20, 1937 | Volume control system | DOBA JR STEPHEN | BELL TELEPHONE LABOR INC |
| 2087314 | July 20, 1937 | Echo suppressor circuits | BJORNSON BJORN G | BELL TELEPHONE LABOR INC |
| 2088318 | July 27, 1937 | Relay circuit | BUSCH ALOYSIUS J | BELL TELEPHONE LABOR INC |
| 2088317 | July 27, 1937 | Electric discharge tube testing and measuring circuit | BACHELET ALBERT E | BELL TELEPHONE LABOR INC |
| 2088314 | July 27, 1937 | Composite set | HORACE WHITTLE | BELL TELEPHONE LABOR INC |
| 2088311 | July 27, 1937 | Telephone ringing system | STACY LELAND J | BELL TELEPHONE LABOR INC |
| 2088309 | July 27, 1937 | Coin collector apparatus | SHANN OSCAR A | BELL TELEPHONE LABOR INC |
| 2088305 | July 27, 1937 | Telephone system | OSCAR MYERS | BELL TELEPHONE LABOR INC |
| 2088297 | July 27, 1937 | Harmonic analyzer | KOENIG JR WALTER | BELL TELEPHONE LABOR INC |
| 2088292 | July 27, 1937 | Electrical communication system | EGLIN JAMES M | BELL TELEPHONE LABOR INC |
| 2088750 | August 3, 1937 | Answer-back device for machine switching printing telegraph exchange systems | KINKEAD FULLERTON S | BELL TELEPHONE LABOR INC |
| 2088749 | August 3, 1937 | Reception of guided waves | KING ARCHIC P | BELL TELEPHONE LABOR INC |
| 2088733 | August 3, 1937 | Printing telegraph system | CHARLES WHITE | BELL TELEPHONE LABOR INC |
| 2089921 | August 10, 1937 | Dial telephone system | CARPENTER WARREN W | BELL TELEPHONE LABOR INC |
| 2089438 | August 10, 1937 | Telephone system | SCUDDER FREDERICK J | BELL TELEPHONE LABOR INC |
| 2089409 | August 10, 1937 | Phase correcting means and method | OHL RUSSELL S | BELL TELEPHONE LABOR INC |
| 2089386 | August 10, 1937 | Support for hand telephones | LUM GEORGE R | BELL TELEPHONE LABOR INC |
| 2089346 | August 10, 1937 | Transmission circuit | DOBA JR STEPHEN | BELL TELEPHONE LABOR INC |
| 2089338 | August 10, 1937 | Telephone system | CARPENTER WARREN W ; HAGUE ALFRED E | BELL TELEPHONE LABOR INC |
| 2089320 | August 10, 1937 | Electromagnetic switching device | WORTH JOHN B | BELL TELEPHONE LABOR INC |
| 2089264 | August 10, 1937 | Electrical terminal | INGMANSON JOHN H | BELL TELEPHONE LABOR INC |
| 2089218 | August 10, 1937 | Glow discharge device | MENDENHALL HALLAM E | BELL TELEPHONE LABOR INC |
| 2089179 | August 10, 1937 | Coaxial transmission system | BLACK KNOX C | BELL TELEPHONE LABOR INC |
| 2090995 | August 24, 1937 | Time delay relay | BROWNE BENNIC O | BELL TELEPHONE LABOR INC |
| 2091556 | August 31, 1937 | Coin chute for coin collectors | MILLS PERCY E. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2091554 | August 31, 1937 | Composite refractory body | MENDENHALL HALLAM E | BELL TELEPHONE LABOR INC |
| 2091551 | August 31, 1937 | Signaling system | LOW FRANK K | BELL TELEPHONE LABOR INC |
| 2091549 | August 31, 1937 | Cabinet | KELSO HUGH D | BELL TELEPHONE LABOR INC |
| 2091541 | August 31, 1937 | Telephone system | WILLIAMS SAMUEL B | BELL TELEPHONE LABOR INC |
| 2091533 | August 31, 1937 | Automatic measuring device | SWART LELAND K | BELL TELEPHONE LABOR INC |
| 2091259 | August 31, 1937 | Resistance unit | FISHER JOSEPH R | BELL TELEPHONE LABOR INC |
| 2091250 | August 31, 1937 | Wave filter | BLACKMAN RALPH B | BELL TELEPHONE LABOR INC |
| 2091249 | August 31, 1937 | Method of and apparatus for working materials | BIELING CARL A | BELL TELEPHONE LABOR INC |
| 2092515 | September 7, 1937 | Insulator | JERVEY WILLIAM T | BELL TELEPHONE LABOR INC |
| 2092513 | September 7, 1937 | Telephone system | HENRY HOVLAND | BELL TELEPHONE LABOR INC |
| 2092509 | September 7, 1937 | Telephone booth | HAMPTON LEON N ; SMITH ALBERT K | BELL TELEPHONE LABOR INC |
| 2092495 | September 7, 1937 | Telephone system | JOHN BAUMFALK | BELL TELEPHONE LABOR INC |
| 2092493 | September 7, 1937 | Automatic stock quotation system | ALLEN LAWRENCE H ; GOODERHAM JOHN W | BELL TELEPHONE LABOR INC |
| 2092485 | September 7, 1937 | Prepayment telephone system | ULRICH HORACE W | BELL TELEPHONE LABOR INC |
| 2092474 | September 7, 1937 | Radio telephone monitoring system | GEORGE RODWIN | BELL TELEPHONE LABOR INC |
| 2092465 | September 7, 1937 | Telephone system | MATTHIES WILLIAM H | BELL TELEPHONE LABOR INC |
| 2093117 | September 14, 1937 | Telephone system | CARPENTER WARREN W | BELL TELEPHONE LABOR INC |
| 2093084 | September 14, 1937 | System for giving teletypewriter service over telephone lines | KRECEK JOSEPH A | BELL TELEPHONE LABOR INC |
| 2093080 | September 14, 1937 | Teletypewriter system | HYSKO JOHN L ; LARGE WAYNE V K ; MUNRO CHARLES C | BELL TELEPHONE LABOR INC |
| 2093078 | September 14, 1937 | Electric space discharge tube system | HEISING RAYMOND A | BELL TELEPHONE LABOR INC |
| 2093871 | September 21, 1937 | Electrical receiving and measuring system | LEVIN SAMUEL A | BELL TELEPHONE LABOR INC |
| 2093855 | September 21, 1937 | Radio telephone monitoring system | TAYLOR CHARLES C | BELL TELEPHONE LABOR INC |
| 2093854 | September 21, 1937 | Measuring device | SWART LELAND K | BELL TELEPHONE LABOR INC |
| 2093847 | September 21, 1937 | Radio telephone monitoring system | PRUDEN HAROLD M | BELL TELEPHONE LABOR INC |
| 2093679 | September 21, 1937 | Telephone booth | KUNTZ FRANK A | BELL TELEPHONE LABOR INC |
| 2093674 | September 21, 1937 | Light valve | HARLEY JOHN B | BELL TELEPHONE LABOR INC |
| 2093670 | September 21, 1937 | Control circuits | GIBSON EARL S | BELL TELEPHONE LABOR INC |
| 2093669 | September 21, 1937 | Vent plug for storage batteries | FORSTER FRANK T | BELL TELEPHONE LABOR INC |
| 2093667 | September 21, 1937 | Pad control system | WINSOR JR PAUL | BELL TELEPHONE LABOR INC |
| 2093664 | September 21, 1937 | Acoustic device | SWICKARD ANDREW E | BELL TELEPHONE LABOR INC |
| 2093661 | September 21, 1937 | Asymmetrical conductor | SMITH GEORGE O | BELL TELEPHONE LABOR INC |
| 2094068 | September 28, 1937 | Telautograph | HARRISON HENRY C | BELL TELEPHONE LABOR INC |
| 2094062 | September 28, 1937 | Electromechanical impedance | SIDNEY DARLINGTON | BELL TELEPHONE LABOR INC |
| 2094060 | September 28, 1937 | Timing apparatus | BUSCH ALOYSIUS J | BELL TELEPHONE LABOR INC |
| 2094052 | September 28, 1937 | Facsimile telegraph system | THORALF AAMODT | BELL TELEPHONE LABOR INC |
| 2094049 | September 28, 1937 | Signal system | SUTLIFF CARLETON B | BELL TELEPHONE LABOR INC |
| 2094044 | September 28, 1937 | Wave filter | MASON WARREN P | BELL TELEPHONE LABOR INC |
| 2094043 | September 28, 1937 | Method of and means for assembling acoustic devices | MARSHALL ROBERT N | BELL TELEPHONE LABOR INC |
| 2094039 | September 28, 1937 | Telautograph | KINSLEY THOMAS G | BELL TELEPHONE LABOR INC |
| 2096460 | October 19, 1937 | Space discharge apparatus | LLEWELLYN FREDERICK B | BELL TELEPHONE LABOR INC |
| 2096456 | October 19, 1937 | Electromagnetic switching device | GARVIN JOHN S | BELL TELEPHONE LABOR INC |
| 2096450 | October 19, 1937 | Control circuit | CURTIS AUSTEN M | BELL TELEPHONE LABOR INC |
| 2096436 | October 19, 1937 | Telephone system | MASSONNCAU ROBERT F | BELL TELEPHONE LABOR INC |
| 2096416 | October 19, 1937 | Method of coating hollow receptacles | WEINHART HOWARD W. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2096415 | October 19, 1937 | Electron discharge device | WEINHART HOWARD W | BELL TELEPHONE LABOR INC |
| 2096054 | October 19, 1937 | Electromagnetic switching device | MILLER DANIEL D | BELL TELEPHONE LABOR INC |
| 2096046 | October 19, 1937 | Support for telephones | KUHN JOHN J ; LUM GEORGE R | BELL TELEPHONE LABOR INC |
| 2096045 | October 19, 1937 | Method of producing pressure equalizing material for cable conductors | KEMP ARCHIE R | BELL TELEPHONE LABOR INC |
| 2096029 | October 19, 1937 | Signaling system | ORFEO CESAREO ; ROBERT MUELLER | BELL TELEPHONE LABOR INC |
| 2096027 | October 19, 1937 | Attenuation equalizer | BODE HENDRIK W | BELL TELEPHONE LABOR INC |
| 2096025 | October 19, 1937 | Transmission system | BELL JOHN H | BELL TELEPHONE LABOR INC |
| 2097165 | October 26, 1937 | Telephone system | BELL JOHN H | GRACE MACDONALD STOKELY BELL TELEPHONE LABOR INC |
| 2097157 | October 26, 1937 | Electron emitting cathode and method of developing same | JAMESON MALCOLM F | BELL TELEPHONE LABOR INC |
| 2097151 | October 26, 1937 | Register device | GLEASON DANIEL H | BELL TELEPHONE LABOR INC |
| 2097146 | October 26, 1937 | Electrical power regulating apparatus | DE LANGE OWEN E | BELL TELEPHONE LABOR INC |
| 2096824 | October 26, 1937 | Power supply circuit | PRICE ARNODL F | BELL TELEPHONE LABOR INC |
| 2096819 | October 26, 1937 | Communication system | OSCAR MYERS | BELL TELEPHONE LABOR INC |
| 2096805 | October 26, 1937 | Phonograph | HICKMAN CLARENCE N | BELL TELEPHONE LABOR INC |
| 2096801 | October 26, 1937 | Power transformer | GRANT DWIGHT W | BELL TELEPHONE LABOR INC |
| 2096793 | October 26, 1937 | Transmission control circuits in wave transmission systems | DOBA JR STEPHEN | BELL TELEPHONE LABOR INC |
| 2097519 | November 2, 1937 | Signal transmission system | GABRICL JOHN C ; GEORGE RODWIN | BELL TELEPHONE LABOR INC |
| 2097514 | November 2, 1937 | Electron discharge system for ultrashort waves | CHAFFEE JOSEPH G | BELL TELEPHONE LABOR INC |
| 2097507 | November 2, 1937 | Control circuit | BARNEY HAROLD L | BELL TELEPHONE LABOR INC |
| 2097498 | November 2, 1937 | Coin chute for coin collectors | MILLS PERCY E. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2097497 | November 2, 1937 | Coin chute for coin collectors | MILLS PERCY E | BELL TELEPHONE LABOR INC |
| 2097488 | November 2, 1937 | Piezoelectric device | KINSLEY THOMAS G | BELL TELEPHONE LABOR INC |
| 2097467 | November 2, 1937 | Photoelectric tube | PRESCOTT JR CHARLES H | BELL TELEPHONE LABOR INC |
| 2098326 | November 9, 1937 | Calculating device | WENTE EDWARD C | BELL TELEPHONE LABOR INC |
| 2098321 | November 9, 1937 | Distributing frame | TREPTOW FREDERICK W. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2098310 | November 9, 1937 | Circuit for space discharge devices | ROCKWOOD JR GEORGE H | BELL TELEPHONE LABOR INC |
| 2098301 | November 9, 1937 | Glow discharge device | MENDENHALL HALLAM E | BELL TELEPHONE LABOR INC |
| 2098300 | November 9, 1937 | Electric welding | MAY DAVID T | BELL TELEPHONE LABOR INC |
| 2098291 | November 9, 1937 | Sound translating apparatus | HOPKINS HARRIS F | BELL TELEPHONE LABOR INC |
| 2098287 | November 9, 1937 | System of indicating distance | GENT EDGAR W | BELL TELEPHONE LABOR INC |
| 2098286 | November 9, 1937 | Transmission control in signaling systems | GARFIELD OWEN R | BELL TELEPHONE LABOR INC |
| 2098274 | November 9, 1937 | Telephone system | CARPENTER WARREN W ; OSCAR MYERS | BELL TELEPHONE LABOR INC |
| 2099143 | November 16, 1937 | Call transmitter device | ROBERTS JOHN G ; RICHARD CHARLES D | BELL TELEPHONE LABOR INC |
| 2099117 | November 16, 1937 | Terminal mounting | KELSAY LE ROY W | BELL TELEPHONE LABOR INC |
| 2099115 | November 16, 1937 | Communication system | IVES HERBERT E | BELL TELEPHONE LABOR INC |
| 2099111 | November 16, 1937 | Gaseous discharge device | HEFELE JOHN R | BELL TELEPHONE LABOR INC |
| 2098968 | November 16, 1937 | Transmission regulation | MALLINCKRODT CHARLES O | BELL TELEPHONE LABOR INC |
| 2098956 | November 16, 1937 | Signaling system | DUDLEY HOMER W | BELL TELEPHONE LABOR INC |
| 2098950 | November 16, 1937 | Vacuum tube circuit | BLACK HAROLD S | BELL TELEPHONE LABOR INC |
| 2099889 | November 23, 1937 | Television system | IVES HERBERT E | BELL TELEPHONE LABOR INC |
| 2099865 | November 23, 1937 | Sound picture system | MORTON EDMUND R | BELL TELEPHONE LABOR INC |
| 2100412 | November 30, 1937 | Temperature-compensated device | SCOTT HERBERT J | BELL TELEPHONE LABOR INC |
| 2100404 | November 30, 1937 | Fluid transmission | MASON WARREN P ; STANTON GEORGE T ; TWEEDDALE JOHN E | BELL TELEPHONE LABOR INC ELECTRICAL RES PROD INC |
| 2100400 | November 30, 1937 | Telephone system | DER LINDEN ERNST VON | BELL TELEPHONE LABOR INC |
| 2100394 | November 30, 1937 | Reception of frequency modulated waves and circuits therefor | HEISING RAYMOND A | BELL TELEPHONE LABOR INC |
| 2100390 | November 30, 1937 | Call transmitter | GOFF HAROLD W | BELL TELEPHONE LABOR INC |
| 2100375 | November 30, 1937 | Gain control | BLAIR ROYER R | BELL TELEPHONE LABOR INC |
| 2100367 | November 30, 1937 | Electric discharge device | WARD FRANK E | BELL TELEPHONE LABOR INC |
| 2101668 | December 7, 1937 | Radio communication system | BISHOP JOHN B ; KNOTT WILLIAM M | BELL TELEPHONE LABOR INC |
| 2101272 | December 7, 1937 | Combined magnetostriction and piezoelectric selective device | SCOTT HERBERT J | BELL TELEPHONE LABOR INC |
| 2101258 | December 7, 1937 | Telephone system | KORN FRANKLIN A | BELL TELEPHONE LABOR INC |
| 2101256 | December 7, 1937 | Carrier telegraph receiver | JONES THEODORE A | BELL TELEPHONE LABOR INC |
| 2101254 | December 7, 1937 | Testing circuit | HAGUE ALFRED E | BELL TELEPHONE LABOR INC |
| 2101246 | December 7, 1937 | Transmission control in signaling systems | DICKIESON ALTON C | BELL TELEPHONE LABOR INC |
| 2101243 | December 7, 1937 | Telegraph signal repeating system | CUMMINGS GEORGE C | BELL TELEPHONE LABOR INC |
| 2101224 | December 7, 1937 | Privacy system | SMITH OSBORNE HAROLD ; BISBEE WRIGHT SUMNER | AMERICAN TELEPHONE & TELEGRAPH BELL TELEPHONE LABOR INC |
| 2102155 | December 14, 1937 | Telephone system | HENRY HOVLAND | BELL TELEPHONE LABOR INC |
| 2102141 | December 14, 1937 | Battery charging system | WAGAR HAROLD N | BELL TELEPHONE LABOR INC |
| 2102138 | December 14, 1937 | Transmission system | STRIEBY MAURICE E | BELL TELEPHONE LABOR INC |
| 2102137 | December 14, 1937 | Telephone system | SPERRY ARTHUR B | BELL TELEPHONE LABOR INC |
| 2102769 | December 21, 1937 | Service observing system | ULRICH HERACE W | BELL TELEPHONE LABOR INC |
| 2102760 | December 21, 1937 | Photoelectric tube | STILWELL GEORGE R | BELL TELEPHONE LABOR INC |
| 2102719 | December 21, 1937 | Signal distortion indicating and measuring device | KINKEAD FULLERTON S | BELL TELEPHONE LABOR INC |
| 2102671 | December 21, 1937 | Wave translation system | BLACK HAROLD S | BELL TELEPHONE LABOR INC |
| 2102670 | December 21, 1937 | Wave translation system | BLACK HAROLD S. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2103506 | December 28, 1937 | Wave translating system | YEUTTER CLYDE S | BELL TELEPHONE LABOR INC |
| 2103501 | December 28, 1937 | Terminal box device | WALDRON FRED D ; WIER ANTHONY J | BELL TELEPHONE LABOR INC |
| 2103490 | December 28, 1937 | Wave translating circuits | EUGENE PETERSON | BELL TELEPHONE LABOR INC |
| 2103489 | December 28, 1937 | Amplifier circuit | EUGENE PETERSON | BELL TELEPHONE LABOR INC |
| 2103481 | December 28, 1937 | Signaling system and method | MATHES ROBERT C | BELL TELEPHONE LABOR INC |
| 2103476 | December 28, 1937 | Telegraph test board circuit | LUCEK CHARLES W | BELL TELEPHONE LABOR INC |
| 2103468 | December 28, 1937 | Wave translating system | KREER JR JOHN G | BELL TELEPHONE LABOR INC |
| 2104463 | January 4, 1938 | Source of variable high direct potential | JOHNSON JOHN B ; KAMMERER FRED W | BELL TELEPHONE LABOR INC |
| 2104449 | January 4, 1938 | Telephone system | BOWNE LANGFORD J ; HOWARD BEACH ; LAMBERTY FREDERICK R | GRACE MACDONALD STOKELY BELL TELEPHONE LABOR INC |
| 2104434 | January 4, 1938 | Connecting block and jack assembly | MCCORMICK CHARLES G ; SHEATSLEY PAUL W | BELL TELEPHONE LABOR INC |
| 2104433 | January 4, 1938 | Acoustic device | MARSHALL ROBERT N | BELL TELEPHONE LABOR INC |
| 2104426 | January 4, 1938 | Impulse repeater | KINKEAD FULLERTON S | BELL TELEPHONE LABOR INC |
| 2104425 | January 4, 1938 | Telephone booth | KUNTZ FRANK A | BELL TELEPHONE LABOR INC |
| 2105927 | January 18, 1938 | Gain control system | NYQUIST HARRY | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2105924 | January 18, 1938 | Electron discharge device | MENDENHALL HALLAM E | BELL TELEPHONE LABOR INC |
| 2105921 | January 18, 1938 | Number checking system | KORN FRANKLIN A | BELL TELEPHONE LABOR INC |
| 2105916 | January 18, 1938 | Sound reproducing system | HARRISON HENRY C | BELL TELEPHONE LABOR INC |
| 2105910 | January 18, 1938 | Carrier wave transmission system | DUDLEY HOMER W. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2105900 | January 18, 1938 | Shaft bearing | BARBER CHARLES C ; MCWILLIAMS CHARLES W | BELL TELEPHONE LABOR INC |
| 2105898 | January 18, 1938 | Telephone exchange system | WILEY WHITNEY | BELL TELEPHONE LABOR INC |
| 2105507 | January 18, 1938 | Electron discharge device | RONCI VICTOR L | BELL TELEPHONE LABOR INC |
| 2105506 | January 18, 1938 | Electron discharge device | RONCL VICTOR L | BELL TELEPHONE LABOR INC |
| 2105483 | January 18, 1938 | Electron discharge device | LAICO JOSEPH P | BELL TELEPHONE LABOR INC |
| 2105472 | January 18, 1938 | High power discharge device | CLARK JAMES E ; EKSTRAND STURE O ; RONCI VICTOR L | BELL TELEPHONE LABOR INC |
| 2106498 | January 25, 1938 | Selective signal system | FIELD JOSEPH C | BELL TELEPHONE LABOR INC |
| 2106360 | January 25, 1938 | Telephone system | RALPH RAYMOND | BELL TELEPHONE LABOR INC |
| 2106357 | January 25, 1938 | Telegraph system | MARSHALL TOLA A | BELL TELEPHONE LABOR INC |
| 2106356 | January 25, 1938 | Signaling system | LOW FRANK K | BELL TELEPHONE LABOR INC |
| 2106352 | January 25, 1938 | Teletypewriter station | KINKEAD FULLERTON S | BELL TELEPHONE LABOR INC |
| 2106350 | January 25, 1938 | Testing system | HICKMAN CLARENCE N ; KINGSBURY BURTON A | BELL TELEPHONE LABOR INC |
| 2106344 | January 25, 1938 | Electrical device | FLEGAL JOHN R ; PRIESSMAN NEIL Y | BELL TELEPHONE LABOR INC |
| 2106342 | January 25, 1938 | Electric discharge tube circuits | DEBA JR STEPHEN | BELL TELEPHONE LABOR INC |
| 2106337 | January 25, 1938 | Transmission system | BLACK HAROLD S | BELL TELEPHONE LABOR INC |
| 2106336 | January 25, 1938 | Voltage or gain control | ANDERSON FRITHIOF B ; MALLINCKRODT CHARLES O ; STILLWELL ALBERT L | BELL TELEPHONE LABOR INC |
| 2107177 | February 1, 1938 | Stranded conductor | DUDLEY HOMER W | BELL TELEPHONE LABOR INC |
| 2107168 | February 1, 1938 | Carrier communicating system | TIDD WARREN H | BELL TELEPHONE LABOR INC |
| 2107158 | February 1, 1938 | Telephone system | LEWIS HERBERT A | BELL TELEPHONE LABOR INC |
| 2107155 | February 1, 1938 | Radio directional indicator | KLEINKAUF JAMES D ; MARTIN DE LOSS K | BELL TELEPHONE LABOR INC |
| 2107154 | February 1, 1938 | Telephone signaling system | KING RALPH E | BELL TELEPHONE LABOR INC |
| 2107153 | February 1, 1938 | Multiple channel electro-optical image production using mirror helix | IVES HERBERT E | BELL TELEPHONE LABOR INC |
| 2107149 | February 1, 1938 | Signal distortion indicating and measuring device for printing telegraph systems | HEARN RICHARD B | BELL TELEPHONE LABOR INC |
| 2106813 | February 1, 1938 | Acoustic device | ROMANOW FRANK F | BELL TELEPHONE LABOR INC |
| 2106810 | February 1, 1938 | Signaling system | RESSLER RALPH E | BELL TELEPHONE LABOR INC |
| 2106805 | February 1, 1938 | Teletypewriter | LANG WILMARTH Y ; WATSON EDWARD F | BELL TELEPHONE LABOR INC AMERICAN TELEPHONE & TELEGRAPH |
| 2106793 | February 1, 1938 | Filter including space discharge device | BURTON EVERETT T | BELL TELEPHONE LABOR INC |
| 2106785 | February 1, 1938 | Electric filter | AUGUSTADT HERBERT W | BELL TELEPHONE LABOR INC |
| 2106713 | February 1, 1938 | Wave-meter | BOWEN ARNOLD E | BELL TELEPHONE LABOR INC |
| 2107759 | February 8, 1938 | Electrooptical scanning apparatus | MATTKE CHARLES F | BELL TELEPHONE LABOR INC |
| 2107757 | February 8, 1938 | Acoustic device | KINSLEY THOMAS G | BELL TELEPHONE LABOR INC |
| 2107756 | February 8, 1938 | Privacy system | KENDALL BURTON W ; DOREN MITCHELL | BELL TELEPHONE LABOR INC |
| 2107754 | February 8, 1938 | Telephone system | JOHNSTON DONALD F | BELL TELEPHONE LABOR INC |
| 2107753 | February 8, 1938 | Distortion indicating and measuring device for printing telegraph systems | HEARN RICHARD B | BELL TELEPHONE LABOR INC |
| 2107752 | February 8, 1938 | Electrical device | HARLEY JOHN B | BELL TELEPHONE LABOR INC |
| 2107751 | February 8, 1938 | Terminal strip | GOFF HAROLD W | BELL TELEPHONE LABOR INC |
| 2107746 | February 8, 1938 | Relay circuit | BUSCH ALOYSIUS J | BELL TELEPHONE LABOR INC |
| 2108642 | February 15, 1938 | Magnetic device | BOARDMAN EDWARD M | BELL TELEPHONE LABOR INC |
| 2108640 | February 15, 1938 | Electron discharge apparatus | BIELING CARL A | BELL TELEPHONE LABOR INC |
| 2108637 | February 15, 1938 | Testing apparatus | BARTGIS CHARLES P | BELL TELEPHONE LABOR INC |
| 2108635 | February 15, 1938 | Shield for ignition plugs | AIKEN CHARLES B ; THOMAS DURFEE | BELL TELEPHONE LABOR INC |
| 2108830 | February 22, 1938 | Electron discharge apparatus | SKELLETT ALBERT M | BELL TELEPHONE LABOR INC |
| 2109744 | March 1, 1938 | Electrooptical scanning apparatus | FRANK GRAY | BELL TELEPHONE LABOR INC |
| 2110569 | March 8, 1938 | Magnetic material | CIOFFI PAUL P | BELL TELEPHONE LABOR INC |
| 2110460 | March 8, 1938 | Selective switch | CARPENTER WARREN W ; REYNOLDS JOHN N | BELL TELEPHONE LABOR INC |
| 2110457 | March 8, 1938 | Undersea cable system | WENTZ JESSE F | BELL TELEPHONE LABOR INC |
| 2110438 | March 8, 1938 | Impulse repeater | CUMMINGS GEORGE C ; HEARN RICHARD B | BELL TELEPHONE LABOR INC |
| 2110433 | March 8, 1938 | Take-up device for telephone switchboard cords | YOST LLOYD A | BELL TELEPHONE LABOR INC |
| 2110286 | March 8, 1938 | Teletypewriter equipment | BURGESS ALFRED A | BELL TELEPHONE LABOR INC |
| 2110284 | March 8, 1938 | Repeater system | BACHELET ALBERT E ; SMART BRAND | BELL TELEPHONE LABOR INC |
| 2110278 | March 8, 1938 | Translating circuit | SHAW ROBERT C | BELL TELEPHONE LABOR INC |
| 2110271 | March 8, 1938 | Welding device | MAY DAVID T | BELL TELEPHONE LABOR INC |
| 2110200 | March 8, 1938 | Acoustic device | CLARKE HARRY R | BELL TELEPHONE LABOR INC |
| 2111652 | March 22, 1938 | Communicating system | WILLIAMS SAMUEL B | BELL TELEPHONE LABOR INC |
| 2111651 | March 22, 1938 | High-frequency transmission system | WENTZ JESSE F | BELL TELEPHONE LABOR INC |
| 2111646 | March 22, 1938 | Signaling system | SOFFEL ROBERT O | BELL TELEPHONE LABOR INC |
| 2111644 | March 22, 1938 | Teletypewriter equipment | SINGER FRED J | BELL TELEPHONE LABOR INC |
| 2111632 | March 22, 1938 | Relay circuit | KANNENBERG WALTER F | BELL TELEPHONE LABOR INC |
| 2111626 | March 22, 1938 | Ultrahigh frequency generator | HEISING RAYMOND A. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2111625 | March 22, 1938 | Electron discharge device | HEISING RAYMOND A | BELL TELEPHONE LABOR INC |
| 2111615 | March 22, 1938 | Signaling system | CRAMER WALTER W | BELL TELEPHONE LABOR INC |
| 2111607 | March 22, 1938 | Repeatered line system | BLACK KNOX C | BELL TELEPHONE LABOR INC |
| 2111602 | March 22, 1938 | Electron discharge device | RONCI VICTOR L | BELL TELEPHONE LABOR INC |
| 2111598 | March 22, 1938 | Frequency indicating and controlling apparatus | MARRISON WARREN A | BELL TELEPHONE LABOR INC |
| 2112542 | March 29, 1938 | Electromagnet and controlling circuits therefor | OSCAR MYERS | BELL TELEPHONE LABOR INC |
| 2112541 | March 29, 1938 | Measuring circuits | MORTON EDMUND R | BELL TELEPHONE LABOR INC |
| 2112533 | March 29, 1938 | Frequency changer system | KALB ROBERT M | BELL TELEPHONE LABOR INC |
| 2112515 | March 29, 1938 | Two-way signaling system | BJORNSON BJORN G ; BRYANT NEW TON W | BELL TELEPHONE LABOR INC |
| 2112375 | March 29, 1938 | Timing mechanism | MEAD EDWARD D | BELL TELEPHONE LABOR INC |
| 2112370 | March 29, 1938 | Wire spacing bracket | KLEIN CHARLES H | BELL TELEPHONE LABOR INC |
| 2112366 | March 29, 1938 | Telephone control circuit | HERSEY RALPH E | BELL TELEPHONE LABOR INC |
| 2113256 | April 5, 1938 | Film driving mechanism | JEANNE ARMAND L | BELL TELEPHONE LABOR INC |
| 2113254 | April 5, 1938 | Television system | GRAY FRANK | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2113221 | April 5, 1938 | Signaling system | PULLIS GEORGE A | BELL TELEPHONE LABOR INC |
| 2113220 | April 5, 1938 | Rectifier system | POWER JAMES R | BELL TELEPHONE LABOR INC |
| 2113217 | April 5, 1938 | Signaling system | NELSON STANLEY F | BELL TELEPHONE LABOR INC |
| 2113215 | April 5, 1938 | Cross-bar switch | MAGRATH ARTHUR C | BELL TELEPHONE LABOR INC |
| 2113210 | April 5, 1938 | Frequency stable electric discharge oscillator | HIGHT STUART C | BELL TELEPHONE LABOR INC |
| 2112951 | April 5, 1938 | Telephone system | CARPENTER WARREN W ; MATTHIES WILLIAM H | BELL TELEPHONE LABOR INC |
| 2114253 | April 12, 1938 | Telegraph exchange system | LARGE WAYNE V K ; LOCKE GEORGE A | BELL TELEPHONE LABOR INC |
| 2114046 | April 12, 1938 | Switching mechanism | BURWELL JOHN A | BELL TELEPHONE LABOR INC |
| 2114036 | April 12, 1938 | Frequency stabilization system | SMITH JOHN W ; THAYER GORDEN N | BELL TELEPHONE LABOR INC |
| 2114035 | April 12, 1938 | Electron discharge apparatus | SKELLETT ALBERT M | BELL TELEPHONE LABOR INC |
| 2114023 | April 12, 1938 | Telegraph exchange system | KINKEAD FULLERTON S | BELL TELEPHONE LABOR INC |
| 2114017 | April 12, 1938 | Cable terminal | DRING ARTHUR W | BELL TELEPHONE LABOR INC |
| 2114016 | April 12, 1938 | Electrical counting system | DIMOND THOMAS L. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2114478 | April 19, 1938 | Oscillation generator | SAMUEL ARTHUR L | BELL TELEPHONE LABOR INC |
| 2114477 | April 19, 1938 | Holder for memorandum pads | RITCHIE GEORGE A | BELL TELEPHONE LABOR INC |
| 2114471 | April 19, 1938 | Sound recording and reproducing system | KELLER ARTHUR C ; MOUNT VERNON ; RAFUSE IRAD S | BELL TELEPHONE LABOR INC |
| 2114458 | April 19, 1938 | Resistance device | SCHAFER ARTHUR H | BELL TELEPHONE LABOR INC |
| 2114439 | April 19, 1938 | Electron discharge device | CLARK JAMES E ; RONCI VICTOR L | BELL TELEPHONE LABOR INC |
| 2115152 | April 26, 1938 | Protective and alarm system | EDWARD VROOM | BELL TELEPHONE LABOR INC |
| 2115148 | April 26, 1938 | Sound reproducing system | POLLARD CHARLES E | BELL TELEPHONE LABOR INC |
| 2115145 | April 26, 1938 | Piezoelectric crystal holder | KOERNER LAWRENCE F | BELL TELEPHONE LABOR INC |
| 2115143 | April 26, 1938 | Electrical cable | HARRISON HENRY C | BELL TELEPHONE LABOR INC |
| 2115141 | April 26, 1938 | Transmission regulating system | ECKBERG CURTIS R | BELL TELEPHONE LABOR INC |
| 2115140 | April 26, 1938 | Transmission control in signaling systems | DICKIESON ALTON C | BELL TELEPHONE LABOR INC |
| 2115138 | April 26, 1938 | Wave transmission network | SIDNEY DARLINGTON | BELL TELEPHONE LABOR INC |
| 2115133 | April 26, 1938 | Telephone system | ALLISON SEWELL W | BELL TELEPHONE LABOR INC |
| 2115836 | May 3, 1938 | Electromagnetic switching device | ZUPA FRANK A | BELL TELEPHONE LABOR INC |
| 2115828 | May 3, 1938 | Electron emitting cathode and method of preparation | PRESCOTT JR CHARLES H | BELL TELEPHONE LABOR INC |
| 2115826 | May 3, 1938 | Impedance transformer | NORTON EDWARD L ; WICK RONALD F | BELL TELEPHONE LABOR INC |
| 2115818 | May 3, 1938 | Wave transmission network | EMORY LAKATOS | BELL TELEPHONE LABOR INC |
| 2115808 | May 3, 1938 | Electrical recorder | GERMANTON CHARLES E | BELL TELEPHONE LABOR INC |
| 2115804 | May 3, 1938 | Electromagnetic switch | WILLIAM FONDILLER | BELL TELEPHONE LABOR INC |
| 2115803 | May 3, 1938 | Signaling system | DUDLEY HOMER W | BELL TELEPHONE LABOR INC |
| 2115801 | May 3, 1938 | Line overflow recorder | COLLIS RAYMOND E ; OSCAR MYERS | BELL TELEPHONE LABOR INC |
| 2117001 | May 10, 1938 | Electron discharge device | HALE DOUGLAS A S ; RONCI VICTOR L | BELL TELEPHONE LABOR INC |
| 2116996 | May 10, 1938 | Variable tuned circuits | CRAWFORD ARTHUR B | BELL TELEPHONE LABOR INC |
| 2116600 | May 10, 1938 | Electrical transmission control | FISHER JOSEPH R ; MALLINCKRODT CHARLES O | BELL TELEPHONE LABOR INC |
| 2116586 | May 10, 1938 | Strip feeding mechanism | STOLLER HUGH M | BELL TELEPHONE LABOR INC |
| 2116580 | May 10, 1938 | Coin collector electromagnet | MELICK JOHN M | BELL TELEPHONE LABOR INC |
| 2116562 | May 10, 1938 | Soldering iron | CRUSER VICTOR I. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2116559 | May 10, 1938 | Modulating system | CARUTHERS ROBERT S. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2116558 | May 10, 1938 | Signal control circuits | BJORNSON BJORN G | BELL TELEPHONE LABOR INC |
| 2117843 | May 17, 1938 | Frequency selective circuits | GREEN CHARLES W | BELL TELEPHONE LABOR INC |
| 2117835 | May 17, 1938 | Telephone signaling system | BLACK HAROLD S | BELL TELEPHONE LABOR INC |
| 2117752 | May 17, 1938 | Harmonic producer | WRATHALL LELSHMAN R | BELL TELEPHONE LABOR INC |
| 2117739 | May 17, 1938 | Signaling system | MILLER RALPH L | BELL TELEPHONE LABOR INC |
| 2117723 | May 17, 1938 | Telegraph repeater | HYSKO JOHN L | BELL TELEPHONE LABOR INC |
| 2117709 | May 17, 1938 | Electron discharge device | DAVISSON CLINTON J | BELL TELEPHONE LABOR INC |
| 2117708 | May 17, 1938 | Circuit for controlling signal transmission in two-way signaling systems | DAVIS KINGSBURY H | BELL TELEPHONE LABOR INC |
| 2117705 | May 17, 1938 | Teletypewriter system | CRAMER WALTER W ; CUMMINGS GEORGE C | BELL TELEPHONE LABOR INC |
| 2117702 | May 17, 1938 | Switching mechanism | BURWELL JOHN A | BELL TELEPHONE LABOR INC |
| 2117698 | May 17, 1938 | Transmission system | BUDENBOM HORACE T | BELL TELEPHONE LABOR INC |
| 2117692 | May 17, 1938 | Battery box | ATKINS GEORGE E | BELL TELEPHONE LABOR INC |
| 2118258 | May 24, 1938 | Relay mechanism | MAGRATH ARTHUR C | BELL TELEPHONE LABOR INC |
| 2118247 | May 24, 1938 | Message registration checking system | KECKLER CHARLES W ; OSTEN-SACKEN IRVING C | BELL TELEPHONE LABOR INC |
| 2118246 | May 24, 1938 | Regulating system | JUTSON ROBERT P | BELL TELEPHONE LABOR INC |
| 2118179 | May 24, 1938 | Telegraphone | ELLIS WILLIAM C ; GREINER EARL S | BELL TELEPHONE LABOR INC |
| 2118175 | May 24, 1938 | Control circuits | DOBA JR STEPHEN | BELL TELEPHONE LABOR INC |
| 2118161 | May 24, 1938 | Receiving system for frequency modulated waves | CHAFFEE JOSEPH G | BELL TELEPHONE LABOR INC |
| 2118156 | May 24, 1938 | Impulse operated system employing glow discharge tubes | BURTON EVERETT T | BELL TELEPHONE LABOR INC |
| 2119239 | May 31, 1938 | Telephone system | JOHN MESZAR ; WIESE FLOYD M | BELL TELEPHONE LABOR INC |
| 2119212 | May 31, 1938 | Volume indicator | HENRY KAHL | BELL TELEPHONE LABOR INC |
| 2119211 | May 31, 1938 | Telephone system | HOLDEN WILLIAM H T | BELL TELEPHONE LABOR INC |
| 2119209 | May 31, 1938 | Telephone system | HALL OLIVER C ; TOOMEY JOHN F | BELL TELEPHONE LABOR INC |
| 2118952 | May 31, 1938 | Loaded transmission line | STRIEBY MAURICE E. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2118935 | May 31, 1938 | Switch mechanism | MAGRATH ARTHUR C | BELL TELEPHONE LABOR INC |
| 2118931 | May 31, 1938 | Space discharge tube circuit | LLEWELLYN FREDERICK B | BELL TELEPHONE LABOR INC |
| 2118919 | May 31, 1938 | Testing arrangement for electron discharge devices and methods of operating same | GANNETT DANFORTH K | BELL TELEPHONE LABOR INC |
| 2119855 | June 7, 1938 | Electric discharge device | CHARLES DEPEW | BELL TELEPHONE LABOR INC |
| 2119853 | June 7, 1938 | Electric wave transmission system | CURTIS HAROLD E. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2119607 | June 7, 1938 | Radio communicating system | STERBA ERNEST J | BELL TELEPHONE LABOR INC |
| 2119559 | June 7, 1938 | Electron discharge device | RONCI VICTOR L | BELL TELEPHONE LABOR INC |
| 2120421 | June 14, 1938 | Relay | WAGAR HAROLD N | BELL TELEPHONE LABOR INC |
| 2120419 | June 14, 1938 | Telephone system | MACDONALD STOKELY GRACE | BELL TELEPHONE LABOR INC |
| 2120413 | June 14, 1938 | Selective switch | MATTHIES WILLIAM H | BELL TELEPHONE LABOR INC |
| 2120408 | June 14, 1938 | Selective switch | HICKMAN CLARENCE N | BELL TELEPHONE LABOR INC |
| 2120407 | June 14, 1938 | Timing apparatus | FRANK HARDY | BELL TELEPHONE LABOR INC |
| 2120398 | June 14, 1938 | Cable stripping tool | EDWARDS PAUL G. ; JORDAN HOMER G. ; SHACKLETON SAMUEL P. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2120396 | June 14, 1938 | Electrical contact member | DOMALESKI JOSEPH V | BELL TELEPHONE LABOR INC |
| 2121419 | June 21, 1938 | Call distributing telephone system | BLAKE FOSTER B | BELL TELEPHONE LABOR INC |
| 2121142 | June 21, 1938 | System for the artificial production of vocal or other sounds | DUDLEY HOMER W | BELL TELEPHONE LABOR INC |
| 2121141 | June 21, 1938 | Electrical power indicating apparatus | LANGE OWEN E. DE | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2120994 | June 21, 1938 | Carrier communication system | TIDD WARREN H | BELL TELEPHONE LABOR INC |
| 2120989 | June 21, 1938 | Mechanical drive | HARRY PFANNENSTIEHL | BELL TELEPHONE LABOR INC |
| 2120985 | June 21, 1938 | Electromagnetic device | MELHOSE ALFRED E | BELL TELEPHONE LABOR INC |
| 2120979 | June 21, 1938 | Acoustic element for sound studios | HUNT FRANKLIN L | BELL TELEPHONE LABOR INC |
| 2120973 | June 21, 1938 | Electrical coil | EGINHARD DIETZE ; FOLEY JOHN W | BELL TELEPHONE LABOR INC |
| 2120972 | June 21, 1938 | Converting system | BLOUNT FRANK E | BELL TELEPHONE LABOR INC |
| 2120971 | June 21, 1938 | System and method of determining distance | BAILEY ARNOLD B | BELL TELEPHONE LABOR INC |
| 2122495 | July 5, 1938 | Magnetron oscillator | SCOTT HERBERT J | BELL TELEPHONE LABOR INC |
| 2122463 | July 5, 1938 | Method of enameling wire | FULLER CALVIN S | BELL TELEPHONE LABOR INC |
| 2122458 | July 5, 1938 | Film sprocket | ELMER LLOYD A | BELL TELEPHONE LABOR INC |
| 2123455 | July 12, 1938 | Lead welding | THOMAS JR UPTON B | BELL TELEPHONE LABOR INC |
| 2123241 | July 12, 1938 | Electric wave amplifier | HARLEY JOHN B | BELL TELEPHONE LABOR INC |
| 2123236 | July 12, 1938 | Crystal holder | FAIR IRVIN E | BELL TELEPHONE LABOR INC |
| 2123232 | July 12, 1938 | Telegraph signal repeater | CRAMER WALTER W | BELL TELEPHONE LABOR INC |
| 2123229 | July 12, 1938 | Selector switch | CARPENTER WARREN W ; MALLINA RUDOLPH F | BELL TELEPHONE LABOR INC |
| 2123228 | July 12, 1938 | Selector switch | CARPENTER WARREN W | BELL TELEPHONE LABOR INC |
| 2123227 | July 12, 1938 | Piezoelectric device | BIELING CARL A | BELL TELEPHONE LABOR INC |
| 2123178 | July 12, 1938 | Amplifier | BODE HENDRIK W | BELL TELEPHONE LABOR INC |
| 2123177 | July 12, 1938 | Acoustic device | NELSON BLOUNT | BELL TELEPHONE LABOR INC |
| 2124596 | July 26, 1938 | Piezoelectric crystal apparatus | SYKES ROGER A | BELL TELEPHONE LABOR INC |
| 2125317 | August 2, 1938 | Electron discharge device | RONCI VICTOR L | BELL TELEPHONE LABOR INC |
| 2125316 | August 2, 1938 | Method of forming glass to metal seals | RONCI VICTOR L | BELL TELEPHONE LABOR INC |
| 2125315 | August 2, 1938 | Method of forming glass to metal seals | RONCI VICTOR L | BELL TELEPHONE LABOR INC |
| 2125280 | August 2, 1938 | Electron discharge apparatus | BIELING CARL A | BELL TELEPHONE LABOR INC |
| 2125279 | August 2, 1938 | Electron discharge device | BIELING CARL A | BELL TELEPHONE LABOR INC |
| 2126566 | August 9, 1938 | Acoustic device | MARSHALL ROBERT N | BELL TELEPHONE LABOR INC |
| 2126562 | August 9, 1938 | Relay | EMORY LAKATOS | BELL TELEPHONE LABOR INC |
| 2126549 | August 9, 1938 | Pneumatic ticket distributing system | HAMPTON LEON N ; SMITH ALBERT K | BELL TELEPHONE LABOR INC |
| 2126535 | August 9, 1938 | Teletypewriter system | CORWIN THOMAS L ; SWEZEY BURDETTE S ; WATSON EDWARD F | BELL TELEPHONE LABOR INC AMERICAN TELEPHONE & TELEGRAPH |
| 2126530 | August 9, 1938 | Signaling system | BLACK HAROLD S ; TASSEL EARL K VAN | BELL TELEPHONE LABOR INC |
| 2126529 | August 9, 1938 | Transmission system | BLACK HAROLD S | BELL TELEPHONE LABOR INC |
| 2126363 | August 9, 1938 | Dielectric material | WHITE ADDISON H. ; YAGER WILLIAM A. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2126265 | August 9, 1938 | Phasing and synchronizing of signaling apparatus | KNOOP WILLIAM A | BELL TELEPHONE LABOR INC |
| 2127201 | August 16, 1938 | Wave transmission network | STEPHEN BOBIS | BELL TELEPHONE LABOR INC |
| 2127109 | August 16, 1938 | Driving means for adjustable apparatus | ENGELHARDT GEORGE B | BELL TELEPHONE LABOR INC |
| 2126932 | August 16, 1938 | Testing device | SPYUT ALBERT B | BELL TELEPHONE LABOR INC |
| 2126929 | August 16, 1938 | Sound reproducing system | SNOW WILLIAM B ; STEINBERG JOHN C | BELL TELEPHONE LABOR INC |
| 2126917 | August 16, 1938 | Space discharge amplifier circuit | PETERSON LISS C | BELL TELEPHONE LABOR INC |
| 2126915 | August 16, 1938 | Wave transmission network | NORTON EDWARD L | BELL TELEPHONE LABOR INC |
| 2126895 | August 16, 1938 | Electrical timing arrangement | KNOTT WILLIAM M | BELL TELEPHONE LABOR INC |
| 2126891 | August 16, 1938 | Cable terminal | KELSAY LE ROY W | BELL TELEPHONE LABOR INC |
| 2126886 | August 16, 1938 | Acoustic rectifying device | HIGHT STUART C | BELL TELEPHONE LABOR INC |
| 2126875 | August 16, 1938 | Selection controlling apparatus for telephone systems | DIMOND THOMAS L | BELL TELEPHONE LABOR INC |
| 2126859 | August 16, 1938 | Frequency converter | AFFEL HERMAN A | BELL TELEPHONE LABOR INC |
| 2128442 | August 30, 1938 | Prepayment telephone system | ULRICH HORACE W | BELL TELEPHONE LABOR INC |
| 2128427 | August 30, 1938 | Vacuum switch | MEANS WINTHROP J | BELL TELEPHONE LABOR INC |
| 2128420 | August 30, 1938 | Piezoelectric crystal mounting | LASKEY WILLIAM G | BELL TELEPHONE LABOR INC |
| 2128412 | August 30, 1938 | Cable plug | HARLEY JOSEPH J | BELL TELEPHONE LABOR INC |
| 2128411 | August 30, 1938 | Telephone system | HALLIGAN CLAIR W | BELL TELEPHONE LABOR INC |
| 2128410 | August 30, 1938 | Multiconductor signaling cable | HALL ARTHUR G | BELL TELEPHONE LABOR INC |
| 2128230 | August 30, 1938 | Power transfer circuit | COX LESLIE R | BELL TELEPHONE LABOR INC |
| 2129011 | September 6, 1938 | Telephone system | LAMBERTY FREDERICK R | BELL TELEPHONE LABOR INC |
| 2129008 | September 6, 1938 | Condenser | KATER JOSEPH A | BELL TELEPHONE LABOR INC |
| 2129004 | September 6, 1938 | Radio signaling | MARGARET GREIG ETHEL | BELL TELEPHONE LABOR INC |
| 2129001 | September 6, 1938 | Automatic camera | GOEHNER WILLIAM R | BELL TELEPHONE LABOR INC |
| 2129000 | September 6, 1938 | Condenser | GIVEN FREDERICK J | BELL TELEPHONE LABOR INC |
| 2128991 | September 6, 1938 | Wrench device | EIGHMEY DAVID T | BELL TELEPHONE LABOR INC |
| 2129890 | September 13, 1938 | Regulator | TRUCKSESS DAVID E | BELL TELEPHONE LABOR INC |
| 2129870 | September 13, 1938 | Amplitude modulation system | RACK ALOIS J | BELL TELEPHONE LABOR INC |
| 2129860 | September 13, 1938 | Privacy system | DOREN MITCHELL | BELL TELEPHONE LABOR INC |
| 2129849 | September 13, 1938 | Electron discharge device | LAICO JOSEPH P | BELL TELEPHONE LABOR INC |
| 2129820 | September 13, 1938 | Modulation system for ultra-short waves | CHAFFEE JOSEPH G | BELL TELEPHONE LABOR INC |
| 2129669 | September 13, 1938 | Guided wave transmission | BOWEN ARNOLD E | BELL TELEPHONE LABOR INC |
| 2130517 | September 20, 1938 | Gain control circuits | WILSON IRA G | BELL TELEPHONE LABOR INC |
| 2130510 | September 20, 1938 | Electron discharge device | SAMUEL ARTHUR L | BELL TELEPHONE LABOR INC |
| 2130508 | September 20, 1938 | Inductance device | EUGENE PETERSON | BELL TELEPHONE LABOR INC |
| 2130499 | September 20, 1938 | Relay | KNOWLTON CLARENCE S ; SPICER HOBART M | BELL TELEPHONE LABOR INC |
| 2130485 | September 20, 1938 | Diversity radio receiver | FELDMAN CARL B H ; POLKINGHORN FRANK A | BELL TELEPHONE LABOR INC |
| 2130482 | September 20, 1938 | Telephone system | BOWNE LANGFORD J | BELL TELEPHONE LABOR INC |
| 2131715 | September 27, 1938 | Electrooptical apparatus | BALDWIN JR MILLARD W | BELL TELEPHONE LABOR INC |
| 2131593 | September 27, 1938 | Acoustic device | MARSHALL ROBERT N | BELL TELEPHONE LABOR INC |
| 2131589 | September 27, 1938 | Signaling system | HALLIGAN CLAIR W | BELL TELEPHONE LABOR INC |
| 2131585 | September 27, 1938 | Supply circuit | CURTIS AUSTEN M | BELL TELEPHONE LABOR INC |
| 2131584 | September 27, 1938 | Switching device | CRUSER VICTOR I | BELL TELEPHONE LABOR INC |
| 2131580 | September 27, 1938 | Control circuits | BJORNSON BJORN G | BELL TELEPHONE LABOR INC |
| 2131578 | September 27, 1938 | Monitoring circuit for telephone systems | BACHELET ALBERT E ; GIBSON EARL S | BELL TELEPHONE LABOR INC |
| 2131393 | September 27, 1938 | Electric wave amplifying system | STILLWELL ALBERT L | BELL TELEPHONE LABOR INC |
| 2131366 | September 27, 1938 | Electric wave amplifying system | BLACK HAROLD S | BELL TELEPHONE LABOR INC |
| 2131365 | September 27, 1938 | Wave translation system | BLACK HAROLD S | BELL TELEPHONE LABOR INC |
| 2131173 | September 27, 1938 | Cable sheath extruding press | GREENALL CHARLES H | BELL TELEPHONE LABOR INC |
| 2132241 | October 4, 1938 | Telephone system | HENRY HOVLAND | BELL TELEPHONE LABOR INC |
| 2132225 | October 4, 1938 | Timing apparatus | VICTOR SUBRIZI | BELL TELEPHONE LABOR INC |
| 2132214 | October 4, 1938 | Measuring system | OSCAR MYERS | BELL TELEPHONE LABOR INC |
| 2132213 | October 4, 1938 | Recorder of liquid level heights | LOCKE GEORGE A | BELL TELEPHONE LABOR INC |
| 2132205 | October 4, 1938 | Secret transmission | DICKIESON ALTON C | BELL TELEPHONE LABOR INC |
| 2132203 | October 4, 1938 | Electrical connecter | CLARK JAMES E | BELL TELEPHONE LABOR INC |
| 2131870 | October 4, 1938 | Telegraph system | CRAMER WALTER W | BELL TELEPHONE LABOR INC |
| 2132857 | October 11, 1938 | Telephone system | LANG ALBERT G ; NEELY THOMAS H | BELL TELEPHONE LABOR INC |
| 2133832 | October 18, 1938 | System for compensating for differences in potential | PULLIS GEORGE A | BELL TELEPHONE LABOR INC |
| 2133831 | October 18, 1938 | Lubricating device | PRITCHARD WILLIAM T | BELL TELEPHONE LABOR INC |
| 2133815 | October 18, 1938 | Phonograph reproducer | HARRISON HENRY C | BELL TELEPHONE LABOR INC |
| 2133814 | October 18, 1938 | Telephone system | HALLIGAN CLAIR W | BELL TELEPHONE LABOR INC |
| 2133806 | October 18, 1938 | Radio communication system | EDMOND BRUCE | BELL TELEPHONE LABOR INC |
| 2133794 | October 18, 1938 | Clutch mechanism | BARBER CHARLES C | BELL TELEPHONE LABOR INC |
| 2133475 | October 18, 1938 | Call transmitter | RICHARD CHARLES D | BELL TELEPHONE LABOR INC |
| 2133456 | October 18, 1938 | Regenerative telegraph repeater | KINKEAD FULLERTON S | BELL TELEPHONE LABOR INC |
| 2133448 | October 18, 1938 | Joint for electrical conductors | HARLEY JOSEPH J | BELL TELEPHONE LABOR INC |
| 2133434 | October 18, 1938 | Electric discharge device | CHARLES DEPEW ; RONCL VICTOR L | BELL TELEPHONE LABOR INC |
| 2133429 | October 18, 1938 | Gain control circuit | COX LESLIE R ; TERRY DONALD M | BELL TELEPHONE LABOR INC |
| 2134718 | November 1, 1938 | Electron discharge apparatus | KNOOP WILLIAM A. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2135610 | November 8, 1938 | Horn | WENTE EDWARD C. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2135609 | November 8, 1938 | Loaded transmission line | TASSEL EARL KENNETH VAN | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2135596 | November 8, 1938 | Relay circuit | NYQUIST HARRY | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2135581 | November 8, 1938 | Synchronous receiving system | KNOOP WILLIAM A. | BELL TELEPHONE LABORATRIES, INCORPORATED |
| 2135566 | November 8, 1938 | Gain control circuit | DIXON JOHN T. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2135562 | November 8, 1938 | Thermionic amplifier | COUSINS VAN M. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2137037 | November 15, 1938 | Film driving element | TERRY ROY V | BELL TELEPHONE LABOR INC |
| 2137036 | November 15, 1938 | Transmission system | TAYLOR EDMUND R | BELL TELEPHONE LABOR INC |
| 2137032 | November 15, 1938 | Sound reproducing system | SNOW WILLIAM B | BELL TELEPHONE LABOR INC |
| 2137023 | November 15, 1938 | Carrier communicating system | NEWTON MONK | BELL TELEPHONE LABOR INC |
| 2137021 | November 15, 1938 | Support for base plates | LUM GEORGE R | BELL TELEPHONE LABOR INC |
| 2136630 | November 15, 1938 | Telephone system | MASSONNEAU ROBERT F | BELL TELEPHONE LABOR INC |
| 2136624 | November 15, 1938 | Coin collector base | KUHN JOHN J | BELL TELEPHONE LABOR INC |
| 2136621 | November 15, 1938 | Antenna selector system | KING ARCHIE P ; OHL RUSSELL S | BELL TELEPHONE LABOR INC |
| 2136620 | November 15, 1938 | Telephone system | KING GERALD V | BELL TELEPHONE LABOR INC |
| 2136612 | November 15, 1938 | Electromagnetic multiswitching apparatus | DUBUAR ARTHUR S | BELL TELEPHONE LABOR INC |
| 2136602 | November 15, 1938 | Teletypewriter projector | ATKINS GEORGE E | BELL TELEPHONE LABOR INC |
| 2137818 | November 22, 1938 | Relay | WAGAR HAROLD N | BELL TELEPHONE LABOR INC |
| 2137809 | November 22, 1938 | Terminal connection for electrical devices | RODGERS KARL F | BELL TELEPHONE LABOR INC |
| 2137793 | November 22, 1938 | Telephone system | ANDERSON EMIL N ; GETZ EMIL L ; ULRICH HORACE W | AMERICAN TELEPHONE & TELEGRAPH BELL TELEPHONE LABOR INC |
| 2138613 | November 29, 1938 | Signaling system | PRUDEN HAROLD M | BELL TELEPHONE LABOR INC |
| 2138580 | November 29, 1938 | Printing telegraph system | KINKEAD FULLERTON S | BELL TELEPHONE LABOR INC |
| 2138577 | November 29, 1938 | Electro-optical transmission | FRANK GRAY | BELL TELEPHONE LABOR INC |
| 2138571 | November 29, 1938 | Insulator | DEHMEL RICHARD C | BELL TELEPHONE LABOR INC |
| 2138565 | November 29, 1938 | Signaling system | BASCOM HENRY M | BELL TELEPHONE LABOR INC |
| 2139249 | December 6, 1938 | Telephone system | WELCH PAUL V. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2139247 | December 6, 1938 | Telephone system | STOKELY RAY L. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2139236 | December 6, 1938 | Gain control circuit | KINZER JOHN P. ; WILSON IRA G. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2139233 | December 6, 1938 | Multichannel television system | IVES HERBERT E. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2139232 | December 6, 1938 | Transmission system | HYSKO JOHN L. | BELL TELEPHONE LABORATORIES INCORPORATED |
| 2139230 | December 6, 1938 | High efficiency oscillator of the barkhausen type | HEISING RAYMOND A. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2139220 | December 6, 1938 | Electromechanical wave filter | BLACKMAN RALPH B. ; LAKATOS EMORY | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2140174 | December 13, 1938 | Antenna accessory | SMITH PHILLIP H. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2140154 | December 13, 1938 | Inductive device | GREENIDGE RALPH M. C. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2140145 | December 13, 1938 | Antenna system | STERBA ERNEST J. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2140139 | December 13, 1938 | Electromagnetic device | PRATT EDWARD J. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2140138 | December 13, 1938 | Impulse transmitter | MILLER ALBERT H. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2140126 | December 13, 1938 | Rotary switch | BROADWELL HOWARD | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2139685 | December 13, 1938 | Electron discharge device | LAICO JOSEPH P. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2139678 | December 13, 1938 | Electron discharge device | GLASS MYRON S. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2140930 | December 20, 1938 | Telephone system | WELCH PAUL V. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2140922 | December 20, 1938 | Grid controlled rectifier circuit | JR. GEORGE H. ROCKWOOD, | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2140915 | December 20, 1938 | Distortion correction in wave transmission | JR. JOHN G. KREER, | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2140912 | December 20, 1938 | Single side-band transmission system | HUBER GEORGE H. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2140900 | December 20, 1938 | Distortion correction in wave transmission | DIXON JOHN T. ; JR. JOHN G. KREER, | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2140894 | December 20, 1938 | Terminal strip | BROWN WOLFE W | BELL TELEPHONE LABOR INC |
| 2140492 | December 20, 1938 | Distortion correction in wave transmission | BLACK HAROLD S. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2141746 | December 27, 1938 | Electro-optical image producing device | GRAY FRANK | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2141420 | December 27, 1938 | Acoustic device | SWICKARD ANDREW E. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2141388 | December 27, 1938 | Facsimile telegraph system | HARRISON HENRY C. ; POPE THOMAS J. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2141387 | December 27, 1938 | Electron discharge device | HALE DOUGLAS A. S. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2141378 | December 27, 1938 | Electron discharge device | CLARK JAMES E. ; RONCI VICTOR L. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2141376 | December 27, 1938 | Frequency regulation of oscillators in ultra short wave receivers | CHAFFEE JOSEPH G. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2141373 | December 27, 1938 | Electrical testing system | BLOUNT FRANK E. ; HUSTA PHILIP | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2141372 | December 27, 1938 | Telephone system | BAUMFALK JOHN | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2142335 | January 3, 1939 | Radio transmitter control | SCOTT HERBERT J. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2142331 | January 3, 1939 | Electron emitting cathode | JR. CHARLES H. PRESCOTT, | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2142316 | January 3, 1939 | Multiplex multiline carrier system | HUBER GEORGE H. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2142313 | January 3, 1939 | Electric oscillator | HEISING RAYMOND A. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2142138 | January 3, 1939 | Guided wave transmission | LLEWELLYN FREDERICK B. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2143824 | January 10, 1939 | Asymmetrical conductor | SMITH GEORGE O. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2143414 | January 10, 1939 | Electrical device | GRISDALE RICHARD O | BELL TELEPHONE LABOR INC |
| 2143407 | January 10, 1939 | Gain control circuits | CHESNUT ROY W. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2143404 | January 10, 1939 | Acoustic device | BRYANT HERBERT W. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2143163 | January 10, 1939 | Carrier communication system | MONK NEWTON | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2143056 | January 10, 1939 | Transmission system | CURTIS AUSTEN M. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2143000 | January 10, 1939 | Telegraph system | CRAMER WALTER W. ; FITCH KARL E. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2145079 | January 24, 1939 | Telephone system | GIBSON EARL S. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2145053 | January 24, 1939 | Signaling system | MESZAR JOHN | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2145042 | January 24, 1939 | Timing device | DIMOND THOMAS L. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2145024 | January 24, 1939 | Directive antenna | BRUCE EDMOND | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2144873 | January 24, 1939 | Time measuring system | DIMOND THOMAS L. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2144872 | January 24, 1939 | Insulator | CRUSER VICTOR I. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2144867 | January 24, 1939 | Telephone system | ATKINS GEORGE E. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2144866 | January 24, 1939 | Telephone system | ALLEN LOUIS M. | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 2144865 |