Patent Date Title Inventor Assignee
2231602February 11, 1941Multiplex high frequency signalingSOUTHWORTH GEORGE CAMERICAN TELEPHONE & TELEGRAPH
2231906February 18, 1941Calculating span clearance ruleHAROLD HANSEN CARLAMERICAN TELEPHONE & TELEGRAPH
2232912February 25, 1941Three-element carrier code arrangementHAROLD HANLEY FRANKAMERICAN TELEPHONE & TELEGRAPH
2232891February 25, 1941Condenser telephone transmitter circuitSTONE STONE JOHNAMERICAN TELEPHONE & TELEGRAPH
2237498April 8, 1941Telegraph systemNEISWINTER JAMES TAMERICAN TELEPHONE & TELEGRAPH
2237492April 8, 1941Electrical networkLANDENBERGER CHARLES F ; TALLEY THOMAS JAMERICAN TELEPHONE & TELEGRAPH
2237474April 8, 1941Device for repairing cable terminal binding postsCHANNELL JAMES WAMERICAN TELEPHONE & TELEGRAPH
2237473April 8, 1941Teletypewriter switching systemJAMES BRITT HORACEAMERICAN TELEPHONE & TELEGRAPH
2240974May 6, 1941Holder for paper sheetsCOFFEY ARMSTRONG FRANK ; METER KARL KITTSON VANAMERICAN TELEPHONE & TELEGRAPH
2244609June 3, 1941Calling deviceCOSGROVE FRANK AAMERICAN TELEPHONE & TELEGRAPH
2244597June 3, 1941Telegraph systemJACOB ANSPACH RUSSELLAMERICAN TELEPHONE & TELEGRAPH
2244596June 3, 1941Automatic telephone systemADOLPH ANDERSON GUSTAVEAMERICAN TELEPHONE & TELEGRAPH
2244566June 3, 1941Telegraph test boardTRAPP NEISWINTER JAMESAMERICAN TELEPHONE & TELEGRAPH
2244074June 3, 1941Reversible line feed for teletypewritersMARTIN WADE B ; FRANKLIN TOWNSEND GEORGEAMERICAN TELEPHONE & TELEGRAPH
2244058June 3, 1941Interrupter circuitOSMUND CROFFORD DANIELAMERICAN TELEPHONE & TELEGRAPH
2244041June 3, 1941Transmission measuring systemFRANK ANDREWS JOSEPHAMERICAN TELEPHONE & TELEGRAPH
2245859June 17, 1941Device for cleaning electrical and associated equipmentRAYMOND HUNTER FREDERICKAMERICAN TELEPHONE & TELEGRAPH
2248096July 8, 1941Testing circuitGIFFORD LANE LELANDAMERICAN TELEPHONE & TELEGRAPH
2249166July 15, 1941Electrical probePARKER GEORGE B ; PARKER LLOYD L ; MEEHAN JOHN PAMERICAN TELEPHONE & TELEGRAPH
2249164July 15, 1941Electrical measuring systemKERMIT OLSON NELSAMERICAN TELEPHONE & TELEGRAPH
2249153July 15, 1941Testing deviceMARTIN WADE BAMERICAN TELEPHONE & TELEGRAPH
2249103July 15, 1941Open telegraph alarm circuitJACOB ANSPACH RUSSELLAMERICAN TELEPHONE & TELEGRAPH
2249099July 15, 1941Direct current power systemHENRY WALTON OTTOAMERICAN TELEPHONE & TELEGRAPH
2248923July 15, 1941Communication systemHAROLD HANLEY FRANKAMERICAN TELEPHONE & TELEGRAPH
2252645August 12, 1941Apparatus for producing constant currentFERGUSON ROUGVIE JAMESAMERICAN TELEPHONE & TELEGRAPH
2252629August 12, 1941Supervisory signal systemHAROLD HANLEY FRANK ; CARTER FRANK J ; HOWARD DAVIDSMEYER ORVILLE ; LAMBERSON OTHA MAMERICAN TELEPHONE & TELEGRAPH
BELL TELEPHONE LABOR INC
2252622August 12, 1941Start-stop regenerative telegraph repeaterFOX FRANCIS HAMERICAN TELEPHONE & TELEGRAPH
2257685September 30, 1941Oscillation generatorWILLIAM HIDY JOHNAMERICAN TELEPHONE & TELEGRAPH
2257683September 30, 1941Ticket stacking deviceSPANOGLE HAYWOOD KENNETHAMERICAN TELEPHONE & TELEGRAPH
2257677September 30, 1941Printing telegraph systemCLAYTON GOODWINAMERICAN TELEPHONE & TELEGRAPH
2257663September 30, 1941Apparatus for producing interrupted alternating currentWILLIUS ALBRECHT HAROLDAMERICAN TELEPHONE & TELEGRAPH
2257592September 30, 1941Directional monitoring systemLEO BUXTON BENTLEYAMERICAN TELEPHONE & TELEGRAPH
2257553September 30, 1941Ribbon reverse mechanismANTHONY HEPT JOHNAMERICAN TELEPHONE & TELEGRAPH
2262567November 11, 1941Teletypewriter indicating systemVOTAW CLARENCE JAMERICAN TELEPHONE & TELEGRAPH
2262543November 11, 1941Communication systemANDERS BORGESON CARLAMERICAN TELEPHONE & TELEGRAPH
2262541November 11, 1941Teletypewriter selective calling and switching systemJACOB ANSPACH RUSSELLAMERICAN TELEPHONE & TELEGRAPH
2265120December 2, 1941Secret signaling systemBURKE PERRY DONALDAMERICAN TELEPHONE & TELEGRAPH
2265067December 2, 1941Transmission systemELLESTAD IRWIN MAMERICAN TELEPHONE & TELEGRAPH
2265056December 2, 1941Radio telephone systemFRANKLIN BOWERS ALBERTAMERICAN TELEPHONE & TELEGRAPH
2265044December 2, 1941Secrecy systemOSBORNE HAROLD SAMERICAN TELEPHONE & TELEGRAPH
2265145December 9, 1941Frequency modulatorLEONARD CLARKE JOHNAMERICAN TELEPHONE & TELEGRAPH
2269379January 6, 1942Teletypewriter switching systemMCDONALD PATTON OSCARAMERICAN TELEPHONE & TELEGRAPH
2269375January 6, 1942Telephone systemMCCOWN RAY B ; HOWARD SCHNECKLOTH HARRY ; WILLIAM SMITH ROBERTAMERICAN TELEPHONE & TELEGRAPH
BELL TELEPHONE LABOR INC
2269361January 6, 1942Code calling systemSTEVENS DEWIRE DONALDAMERICAN TELEPHONE & TELEGRAPH
2269346January 6, 1942Teletypewriter switchboard service observing circuitFREDERICK PAGE HAROLD ; LOUIS RICHARD ROBERTAMERICAN TELEPHONE & TELEGRAPH
2269335January 6, 1942Telephone systemJOSEPH CURLEY KIERANAMERICAN TELEPHONE & TELEGRAPH
2278703April 7, 1942Teletypewriter recording systemLEONARD KNITTLE GALEAMERICAN TELEPHONE & TELEGRAPH
2278702April 7, 1942Telephone circuitLEONARD KNITTLE GALEAMERICAN TELEPHONE & TELEGRAPH
2278690April 7, 1942Frequency control systemCLARKE JOHN LAMERICAN TELEPHONE & TELEGRAPH
2278633April 7, 1942Temperature control apparatusBERNARD BAGNALL VERNONAMERICAN TELEPHONE & TELEGRAPH
2284612May 26, 1942Phase control in electrical transmissionIBBOTSON GREEN ESTILL ; NEWTON MONKAMERICAN TELEPHONE & TELEGRAPH
2284329May 26, 1942Telephone systemARNOLD LESTIAMERICAN TELEPHONE & TELEGRAPH
2284324May 26, 1942Typing mechanismWILLIAM KLABUNDE HENRYAMERICAN TELEPHONE & TELEGRAPH
2284302May 26, 1942Support for wiresWILLIAM ROBERTS CHARLESAMERICAN TELEPHONE & TELEGRAPH
2284296May 26, 1942Telegraph circuitJULIUS MUENCH EUGENE ; LEE GREENE MONTEAMERICAN TELEPHONE & TELEGRAPH
2284247May 26, 1942Radio signaling systemBERNARD BAGNALL VERNONAMERICAN TELEPHONE & TELEGRAPH
2293629August 18, 1942Telegraph systemROWE WILLIAM LUCKAMERICAN TELEPHONE AND TELEGRAPH COMPANY
2293611August 18, 1942Telephone systemMEEDS LLOYD T.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
2293588August 18, 1942Telephone systemCAIN GEORGE LELAND ; SOUCY HAROLD ARTHURAMERICAN TELEPHONE AND TELEGRAPH COMPANY
2300050October 27, 1942Teletypewriter control systemLEONARD JAMES MORTIMER ; BORGESON CARL ANDERSAMERICAN TELEPHONE AND TELEGRAPH COMPANY
2300045October 27, 1942Teletypewriter systemGAMMELL ERNEST OSMONDAMERICAN TELEPHONE AND TELEGRAPH COMPANY
2300044October 27, 1942Telephone subscriber's stationDEWIRE DONALD STEVENSAMERICAN TELEPHONE AND TELEGRAPH COMPANY
2300035October 27, 1942Means for suspending aerial cablesNEALE DORY JACOBAMERICAN TELEPHONE AND TELEGRAPH COMPANY
2300007October 27, 1942Telegraph systemRICHARDS KENNETH WATSONAMERICAN TELEPHONE AND TELEGRAPH COMPANY
2300003October 27, 1942Selective signaling systemNEISWINTER JAMES T.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
2299987October 27, 1942Portable apparatus for cleaning electrical equipmentHUNTER FREDERICK RAYMONDAMERICAN TELEPHONE AND TELEGRAPH COMPANY
2299969October 27, 1942Signaling arrangement for telegraph systemsEGNER ROBERT JAMES ; WALKER CHARLES ROBERTAMERICAN TELEPHONE AND TELEGRAPH COMPANY
2301878November 10, 1942Lamp mounting bracketIWEMA BERNARDAMERICAN TELEPHONE AND TELEGRAPH COMPANY
2301853November 10, 1942Cleaning toolCANNON FRANK JESSAMERICAN TELEPHONE AND TELEGRAPH COMPANY
2301844November 10, 1942Telegraph alarm systemANDERSON CLYDE CHRISTENAMERICAN TELEPHONE AND TELEGRAPH COMPANY
2301837November 10, 1942Testing arrangement for trunks to community dial officesWILEY MASON BAIN ; FORESTER ANTHONYAMERICAN TELEPHONE AND TELEGRAPH COMPANY
2301831November 10, 1942Apparatus to indicate teletypewriter skippingFRANKLIN TOWNSEND GEORGEAMERICAN TELEPHONE & TELEGRAPH
2301828November 10, 1942Frequency sensitive elementsSTONE JOHN STONEAMERICAN TELEPHONE AND TELEGRAPH COMPANY
2301824November 10, 1942Guard for coin gaugesSIMSON ROBIE SEYMOURAMERICAN TELEPHONE AND TELEGRAPH COMPANY
2301211November 10, 1942Teletypewriter systemHANLEY FRANK HAROLDAMERICAN TELEPHONE AND TELEGRAPH COMPANY
2306231December 22, 1942Coupling apparatus for vehiclesCLIFFORD SMITH TEMPLE ; EDWARD FREEMAN ALBERTAMERICAN TELEPHONE & TELEGRAPH
2306220December 22, 1942Calling key testing apparatusNEISWINTER JAMES TAMERICAN TELEPHONE & TELEGRAPH
2306214December 22, 1942Telegraph systemHAROLD HANLEY FRANKAMERICAN TELEPHONE & TELEGRAPH
2306203December 22, 1942Holding circuit for subscribers' stationsCHRISTEN ANDERSON CLYDEAMERICAN TELEPHONE & TELEGRAPH
2307901January 12, 1943Gain control systemJOHN THORPEAMERICAN TELEPHONE & TELEGRAPH
2307900January 12, 1943Sag equalizing deviceJOSEPH PILLIOD JAMES ; BURDSALL GRIFFEN ELLWOODAMERICAN TELEPHONE & TELEGRAPH
2307896January 12, 1943System for indicating circuit faults in transmission systemsNEISWINTER JAMES T ; ROY FEATHERINGHAM LEEAMERICAN TELEPHONE & TELEGRAPH
2307884January 12, 1943Tool for applying cushions to plugs and cordsALFRED GREENWOOD HERBERTAMERICAN TELEPHONE & TELEGRAPH
2307842January 12, 1943Teletypewriter systemMARTIN WADE BAMERICAN TELEPHONE & TELEGRAPH
2312314March 2, 1943Ribbon shifting mechanismEMMANUEL BORDONARO LUCIANAMERICAN TELEPHONE & TELEGRAPH
2315439March 30, 1943Teletypewriter systemMAXWELL JOHN L ; RICHARD SHIMMIN ELMERAMERICAN TELEPHONE & TELEGRAPH
2315419March 30, 1943Telegraph breaking systemHAROLD HANLEY FRANKAMERICAN TELEPHONE & TELEGRAPH
2315413March 30, 1943Teletypewriter selection systemOSMOND GAMMELL ERNESTAMERICAN TELEPHONE & TELEGRAPH
2315383March 30, 1943Method and apparatus for locating transmission faultsFRANK ANDREWS JOSEPHAMERICAN TELEPHONE & TELEGRAPH
2321418June 8, 1943Teletypewriter numbering systemBURKE PERRY DONALDAMERICAN TELEPHONE & TELEGRAPH
2321415June 8, 1943Conduit systemFRANK PELTZ HOWARD ; HERMAN ZIESCHANG GUSTAVAMERICAN TELEPHONE & TELEGRAPH
2321412June 8, 1943Dial controlled signaling systemNEISWINTER JAMES TAMERICAN TELEPHONE & TELEGRAPH
2321392June 8, 1943Telegraph station break-in systemWILLIAM KAUFMAN ARTHURAMERICAN TELEPHONE & TELEGRAPH
2321382June 8, 1943Teletypewriter switching systemHAROLD HANLEY FRANKAMERICAN TELEPHONE & TELEGRAPH
2321372June 8, 1943Telegraphic auction systemDUNCAN JAMES ARCHIBALDAMERICAN TELEPHONE AND TELEGRAPH COMPANY
2321349June 8, 1943Telegraph systemJACOB ANSPACH RUSSELLAMERICAN TELEPHONE & TELEGRAPH
2327474August 24, 1943Selective telegraph systemROBERT WALKER CHARLESAMERICAN TELEPHONE & TELEGRAPH
2327458August 24, 1943Testing systemNICHOLSON RELFE JOHNAMERICAN TELEPHONE & TELEGRAPH
2334592November 16, 1943Teletypewriter transmitting systemROBERT WALKER CHARLESAMERICAN TELEPHONE & TELEGRAPH
2334575November 16, 1943Selective signaling systemNEISWINTER JAMES T.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
2334574November 16, 1943Selective signaling systemNEISWINTER JAMES T.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
2334551November 16, 1943Telegraph systemHANLEY FRANK HAROLDAMERICAN TELEPHONE AND TELEGRAPH COMPANY
2334534November 16, 1943TeletypewriterBALLWEG KENNETH E.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
2336373December 7, 1943Teletypewriter switching systemSTARR HARRY R. ; WADDINGTON WALTER E.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
2337929December 28, 1943Apparatus for reducing bias in telegraph signalsWATSON RICHARDS KENNETHAMERICAN TELEPHONE & TELEGRAPH
2337886December 28, 1943Telegraph systemHAROLD HANLEY FRANKAMERICAN TELEPHONE & TELEGRAPH
2337875December 28, 1943Telephone systemSTEVENS DEWIRE DONALDAMERICAN TELEPHONE & TELEGRAPH
2346115April 4, 1944Emergency telephone systemSTANLEY RHOADS CHARLESAMERICAN TELEPHONE & TELEGRAPH
2346114April 4, 1944Right-of-way telephone systemSTANLEY RHOADS CHARLESAMERICAN TELEPHONE & TELEGRAPH
2346113April 4, 1944Auxiliary telephone apparatusSTANLEY RHOADS CHARLESAMERICAN TELEPHONE & TELEGRAPH
2345987April 4, 1944Dial controlled signaling systemNEISWINTER JAMES TAMERICAN TELEPHONE & TELEGRAPH
2345959April 4, 1944Telephone systemBLESSING LEONARD MAMERICAN TELEPHONE & TELEGRAPH
2345933April 4, 1944Phase control in electrical transmissionGREEN ESTILL IBBOTSON ; MONK NEWTONAMERICAN TELEPHONE AND TELEGRAPH COMPANY
2345929April 4, 1944Conductor laying machineFREEMAN ALBERT EDWARDAMERICAN TELEPHONE AND TELEGRAPH COMPANY
2347518April 25, 1944Testing arrangement for telegraph circuitsSPENCER SODERHOLM JAMES ; CHARLES BREENAMERICAN TELEPHONE & TELEGRAPH
2347507April 25, 1944Alarm circuitALBERT ROUNDBURG ERICAMERICAN TELEPHONE & TELEGRAPH
2347505April 25, 1944Phantom magneto telephone systemSTANLEY RHOADS CHARLESAMERICAN TELEPHONE & TELEGRAPH
2347497April 25, 1944Damping means for current responsive apparatusNEISWINTER JAMES T ; HORSEY OLIVER PAMERICAN TELEPHONE & TELEGRAPH
2350193May 30, 1944Auxiliary telephone apparatusSTANLEY RHOADS CHARLESAMERICAN TELEPHONE & TELEGRAPH
2350186May 30, 1944Teletypewriter systemBURKE PERRY DONALDAMERICAN TELEPHONE & TELEGRAPH
2350180May 30, 1944Telegraph systemGORDON MILLER ARTHURAMERICAN TELEPHONE & TELEGRAPH
2350177May 30, 1944Telephone measuring systemIRVING MACKEN HAROLDAMERICAN TELEPHONE & TELEGRAPH
2350146May 30, 1944Telegraphic auction systemANDERS BORGESON CARLAMERICAN TELEPHONE & TELEGRAPH
2353785July 18, 1944Telephone substationSTANLEY RHOADS CHARLESAMERICAN TELEPHONE & TELEGRAPH
2353673July 18, 1944Code signaling systemJOSEPH KENNEDY WILLIAMAMERICAN TELEPHONE & TELEGRAPH
2357576September 5, 1944Pay station telephone systemBROOKS CHESTER E ; FLINT ERLON WAMERICAN TELEPHONE & TELEGRAPH
BELL TELEPHONE LABOR INC
2357840September 12, 1944Regenerative telegraph repeaterMARTIN WADE BAMERICAN TELEPHONE & TELEGRAPH
2358610September 19, 1944Telegraph signaling systemWEBER JR EDWARD HENRYAMERICAN TELEPHONE & TELEGRAPH
2358594September 19, 1944Telephone broadcast systemSTANLEY RHOADS CHARLESAMERICAN TELEPHONE & TELEGRAPH
2358593September 19, 1944Teletypewriter recording systemJONES RANK PAULAMERICAN TELEPHONE & TELEGRAPH
2358586September 19, 1944Telephone call transmitterEARNEST NEWELL CHARLESAMERICAN TELEPHONE & TELEGRAPH
2358577September 19, 1944Device for lifting weightsJACOBSEN MORRIS H LAMERICAN TELEPHONE & TELEGRAPH
2358554September 19, 1944Lock mechanismBIXEL EDWARD CAMERICAN TELEPHONE & TELEGRAPH
2360749October 17, 1944Telephone systemWIEGAND FRANK HAMERICAN TELEPHONE & TELEGRAPH
2360721October 17, 1944Signaling deviceROSE ALLEN MAMERICAN TELEPHONE & TELEGRAPH
2360702October 17, 1944Teletypewriter systemMARTIN WADE B ; HENRY WEINMANN ROBERTAMERICAN TELEPHONE & TELEGRAPH
2360643October 17, 1944Tow hook mounting for vehiclesCARL BIXEL EDWARDAMERICAN TELEPHONE & TELEGRAPH
2360637October 17, 1944Reperforator tape feed-out arrangementJACOB ANSPACH RUSSELL ; MARTIN WADE BAMERICAN TELEPHONE & TELEGRAPH
2361258October 24, 1944Reeling deviceHENRY BROMM FREDAMERICAN TELEPHONE & TELEGRAPH
2367062January 9, 1945Telephone systemHENRY SCHROEPPEL HAROLDAMERICAN TELEPHONE & TELEGRAPH
2367054January 9, 1945Signaling systemRHOADS CHARLES SAMERICAN TELEPHONE & TELEGRAPH
2367042January 9, 1945Signaling apparatusNEISWINTER JAMES TAMERICAN TELEPHONE & TELEGRAPH
2367013January 9, 1945Insulation test setMASON EDMONDS ROBERTAMERICAN TELEPHONE & TELEGRAPH
2366998January 9, 1945Accounting and statistical systemROBERT BRUCEAMERICAN TELEPHONE & TELEGRAPH
2366733January 9, 1945Communication systemKRECEK JOSEPH A ; WALKER CHARLES RBELL TELEPHONE LABOR INC
AMERICAN TELEPHONE & TELEGRAPH
2368264January 30, 1945Battery charging systemFRANKLYN SCOTT WALTER ; STEWART PETERS JAMESAMERICAN TELEPHONE & TELEGRAPH
2369808February 20, 1945Short-wave radio transmissionCLARK SOUTHWORTH GEORGEAMERICAN TELEPHONE & TELEGRAPH
2373675April 17, 1945Party line printing telegraph systemGARDNER LELAND A ; RICHARDS KENNETH WBELL TELEPHONE LABOR INC
AMERICAN TELEPHONE & TELEGRAPH
2375136May 1, 1945Telephone systemSTANLEY RHOADS CHARLESAMERICAN TELEPHONE & TELEGRAPH
2375125May 1, 1945Teletypewriter synchronizing arrangementMARTIN WADE BAMERICAN TELEPHONE & TELEGRAPH
2375100May 1, 1945Electromagnetic relayORLANDO GIBBON CHARLESAMERICAN TELEPHONE & TELEGRAPH
2375073May 1, 1945Plow pointBROWN HOWARD D ; EDWARD FREEMAN ALBERTAMERICAN TELEPHONE & TELEGRAPH
2375066May 1, 1945Automatic coin return systemAVERY ROBERT CAMERICAN TELEPHONE & TELEGRAPH
2375064May 1, 1945Teletypewriter control systemJACOB ANSPACH RUSSELL ; ROBERT WALKER CHARLESAMERICAN TELEPHONE & TELEGRAPH
2375048May 1, 1945Selective signaling systemFRANCIS TORPIE JOHNAMERICAN TELEPHONE AND TELEPHO
2376275May 15, 1945Signaling systemSTANLEY RHOADS CHARLESAMERICAN TELEPHONE & TELEGRAPH
2376272May 15, 1945Automatic telephone answering systemPETERSON EDWIN L ; PAPENMEYER GEORGE WAMERICAN TELEPHONE & TELEGRAPH
2376248May 15, 1945Telegraph systemHAROLD HANLEY FRANKAMERICAN TELEPHONE & TELEGRAPH
2376232May 15, 1945Testing deviceHENRY CUMMINGS WILLIAMAMERICAN TELEPHONE & TELEGRAPH
2376225May 15, 1945Telegraph transmission measuring systemBEYLAND SIDNEY WAMERICAN TELEPHONE & TELEGRAPH
2377453June 5, 1945Telephone systemSTANLEY RHOADS CHARLESAMERICAN TELEPHONE & TELEGRAPH
2377438June 5, 1945Testing apparatusMAXWELL JOHN LAMERICAN TELEPHONE & TELEGRAPH
2377394June 5, 1945Cable splicing apparatusOWEN ADKERSON BRANCHAMERICAN TELEPHONE & TELEGRAPH
2379089June 26, 1945Base for telephone boothsKRUMREICH CHARLES L ; MEEHAN HOWARD WBELL TELEPHONE LABOR INC
AMERICAN TELEPHONE & TELEGRAPH
2379052June 26, 1945Receiver for single side band systemsEARL WEAVER CHARLESAMERICAN TELEPHONE & TELEGRAPH
2379456July 3, 1945Telephone systemSTANLEY RHOADS CHARLESAMERICAN TELEPHONE & TELEGRAPH
2383908August 28, 1945Radio telephone systemFRANKLIN BOWERS ALBERTAMERICAN TELEPHONE & TELEGRAPH
2383826August 28, 1945Line usage recorder circuitBERNARD SPENCER FREDAMERICAN TELEPHONE & TELEGRAPH
2383794August 28, 1945Telephone systemJOSEPH HAYES EARLAMERICAN TELEPHONE & TELEGRAPH
2383788August 28, 1945Telegraph systemHAROLD HANLEY FRANKAMERICAN TELEPHONE & TELEGRAPH
2383777August 28, 1945Subharmonic generatorBERNARD DALY JAMESAMERICAN TELEPHONE & TELEGRAPH
2383770August 28, 1945Electrical measuring systemARTHUR CARSON ; IRVING PAYNEAMERICAN TELEPHONE & TELEGRAPH
2383759August 28, 1945Revertive pulse repeaterCAMPBELL AVERY ROBERTAMERICAN TELEPHONE & TELEGRAPH
2388136October 30, 1945Party-line printing telegraph systemGARDNER LELAND A ; RICHARDS KENNETH WBELL TELEPHONE LABOR INC
AMERICAN TELEPHONE & TELEGRAPH
2389082November 13, 1945Code calling signalSTANLEY RHOADS CHARLESAMERICAN TELEPHONE & TELEGRAPH
2389076November 13, 1945Testing arrangement for trunks to community dial officesPERRY ANTHONY TAMERICAN TELEPHONE & TELEGRAPH
2393236January 22, 1946Subscribers' line testing systemEDMUND COREY HORACE ; FRANK WRIGHTAMERICAN TELEPHONE & TELEGRAPH
2397887April 2, 1946Automatic alternate routing of interoffice callsSCHROEPPEL HAROLD HAMERICAN TELEPHONE & TELEGRAPH
2397885April 2, 1946Frequency diversity telegraph systemANSON RHODES HAROLDAMERICAN TELEPHONE & TELEGRAPH
2397884April 2, 1946Frequency diversity telegraph systemANSON RHODES HAROLDAMERICAN TELEPHONE & TELEGRAPH
2397881April 2, 1946Signaling systemDAVID NITTERAUER FRANKLINAMERICAN TELEPHONE & TELEGRAPH
2397848April 2, 1946Teletypewriter control systemRALEIGH EGGENSPERGER ARLOAMERICAN TELEPHONE & TELEGRAPH
2397837April 2, 1946Apparatus for testing telephone linesJESS CANNON FRANK ; ELLIS GOODWIN GEORGEAMERICAN TELEPHONE & TELEGRAPH
2397830April 2, 1946Harmonic control systemAUSTIN BAILEYAMERICAN TELEPHONE & TELEGRAPH
2397829April 2, 1946Telephone systemCAMPBELL AVERY ROBERTAMERICAN TELEPHONE & TELEGRAPH
2401518June 4, 1946Power-driven wire reel mechanismSMITH TEMPLE C ; BROWN HOWARD DAMERICAN TELEPHONE & TELEGRAPH
2401507June 4, 1946Secrecy cipher systemPIERCE RALPH E ; PERRY DONALD BAMERICAN TELEPHONE & TELEGRAPH
2401494June 4, 1946Secret signaling systemMARTIN WADE BAMERICAN TELEPHONE & TELEGRAPH
2401477June 4, 1946Teletypewriter secrecy systemLEE GREENE MONTEAMERICAN TELEPHONE & TELEGRAPH
2401475June 4, 1946Teletypewriter secrecy systemOSMOND GAMMELL ERNESTAMERICAN TELEPHONE & TELEGRAPH
2401474June 4, 1946Teletypewriter secrecy systemOSMOND GAMMELL ERNESTAMERICAN TELEPHONE & TELEGRAPH
2401464June 4, 1946Privacy systemCLINTON CORDERMAN ROYAMERICAN TELEPHONE & TELEGRAPH
2401454June 4, 1946Teletypewriter secrecy systemWALTER BEMIS EDWINAMERICAN TELEPHONE & TELEGRAPH
2403888July 9, 1946Enciphering and deciphering systemIRVING CRONBURG CLAUDEAMERICAN TELEPHONE & TELEGRAPH
2405339August 6, 1946Equipment for observing dial tone speedPOWELL WILLIS MILTONAMERICAN TELEPHONE & TELEGRAPH
2405332August 6, 1946Toll telephone diversion systemHENRY SCHROEPPEL HAROLDAMERICAN TELEPHONE & TELEGRAPH
2405281August 6, 1946Object locaterWALTER BEMIS EDWINAMERICAN TELEPHONE & TELEGRAPH
2408304September 24, 1946Telegraph repeater systemHOMER FAY FRANK ; WILLIAM REEVE ELMERAMERICAN TELEPHONE & TELEGRAPH
2408299September 24, 1946Selective signaling systemFENNER DAVIS ROWLANDAMERICAN TELEPHONE & TELEGRAPH
2409632October 22, 1946Guiding means for self-propelled torpedoesKING ROBERT WAMERICAN TELEPHONE & TELEGRAPH
2414624January 21, 1947Apparatus for testing transmission linesAUSTIN FISHERAMERICAN TELEPHONE & TELEGRAPH
2414612January 21, 1947Testing insulationROSS CLAUDE MAMERICAN TELEPHONE & TELEGRAPH
2414609January 21, 1947Electrical testing systemRHEUBOTTOM WILLARD CAMERICAN TELEPHONE & TELEGRAPH
2418424April 1, 1947Electrical measuring deviceMARSHALL PLYM LESTERAMERICAN TELEPHONE & TELEGRAPH
2418406April 1, 1947Selective signaling systemHAROLD HANLEY FRANKAMERICAN TELEPHONE & TELEGRAPH
2418401April 1, 1947Testing system for nontyping selectorsELMORE FOLEY DANIEL ; DANIEL JOHNSON WALTERAMERICAN TELEPHONE & TELEGRAPH
2418395April 1, 1947Control apparatus for forced drainageGUSTAV CARLSON ERICAMERICAN TELEPHONE & TELEGRAPH
2421970June 10, 1947Earth boring machineSMITH TEMPLE CAMERICAN TELEPHONE & TELEGRAPH
2421954June 10, 1947Apparatus for indicating teletypewriter speedsMARTIN WADE BAMERICAN TELEPHONE & TELEGRAPH
2421943June 10, 1947Telephone traffic indicating apparatusWEATHERS HILL EDWARDAMERICAN TELEPHONE & TELEGRAPH
2421919June 10, 1947Telephone routing systemCAMPBELL AVERY ROBERTAMERICAN TELEPHONE & TELEGRAPH
2425820August 19, 1947Selective systemNEISWINTER JAMES TAMERICAN TELEPHONE & TELEGRAPH
2425819August 19, 1947Telegraph distortion measuring systemNEISWINTER JAMES TAMERICAN TELEPHONE & TELEGRAPH
2425818August 19, 1947Signaling apparatusNEISWINTER JAMES TAMERICAN TELEPHONE & TELEGRAPH
2425801August 19, 1947Signaling systemHANLEY FRANK HAROLDAMERICAN TELEPHONE AND TELEGRAPH COMPANY
2432134December 9, 1947Directional radio systemBAGNALL VERNON BAMERICAN TELEPHONE & TELEGRAPH
2438891April 6, 1948Telephone boothBEARDSLEY HARRY I ; MEEHAN HOWARD WBELL TELEPHONE LABOR INC
AMERICAN TELEPHONE & TELEGRAPH
2454536November 23, 1948Control apparatus for forced drainageRALPH WERNER DANIELAMERICAN TELEPHONE & TELEGRAPH
2460767February 1, 1949Control circuit for switching telegraph facilitiesRUEMONT PIGMAN GEORGEAMERICAN TELEPHONE & TELEGRAPH
2460936February 8, 1949Portable coin collector for telephone systemsJACKMAN WALTER PAMERICAN TELEPHONE & TELEGRAPH
2466484April 5, 1949Subscriber ringing circuitSCHROEPPEL HAROLD H.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
2466354April 5, 1949Directional radio systemBAGNALL VERNON B.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
2470145May 17, 1949Multifrequency signaling systemCLOS CHARLESAMERICAN TELEPHONE AND TELEGRAPH COMPANY
2471087May 24, 1949Toll operator control for telephone coin collectorsANDERSON GUSTAVE ADOLPHAMERICAN TELEPHONE AND TELEGRAPH COMPANY
2471712May 31, 1949Intercommunication teletypewriter systemBACON WALTER M. ; WALKER CHARLES R.BELL TELEPHONE LABORATORIES, INCORPORATED
AMERICAN TELEPHONE AND TELEGRAPH COMPANY
2472527June 7, 1949Drop wire clampGORDON CHESTER S. ; LALLY WILLIAM J. ; ZIESCHANG GUSTAV H.BELL TELEPHONE LABORATORIES, INCORPORATED
AMERICAN TELEPHONE AND TELEGRAPH COMPANY
2472158June 7, 1949Radio beacon systemHENRY JAMES MATTHEWAMERICAN TELEPHONE AND TELEPHONE COMPANY
2473346June 14, 1949Teletypewriter exchange systemRICHARDS KENNETH W.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
2474658June 28, 1949Type pallet aligning jigDORR GILBERT GARVINAMERICAN TELEPHONE AND TELEGRAPH COMPANY
2477309July 26, 1949Selective telegraph station calling systemMAXWELL JOLIN LAMERICAN TELEPHONE & TELEGRAPH
2481112September 6, 1949Teletypewriter permutation code signal combination counterHAROLD HANLEY FRANKAMERICAN TELEPHONE & TELEGRAPH
2481081September 6, 1949Means for aligning type palletsGUSTAV CELVA WALTERAMERICAN TELEPHONE & TELEGRAPH
2494323January 10, 1950Signal receiving apparatusJR. EDWARD HENRY WEBER,AMERICAN TELEPHONE AND TELEGRAPH COMPANY
2497710February 14, 1950Gaff guard for linemen's climbersWOLLENSACK CLIFFORD NELSONAMERICAN TELEPHONE AND TELEGRAPH COMPANY
2501883March 28, 1950Electronic frequency control for radio receiversEARL WEAVER CHARLESAMERICAN TELEPHONE & TELEGRAPH
2509477May 30, 1950Coin control device for telephone coin collectorsARTHUR CARSON ; MACKINZIE GASSMAN KENNETHAMERICAN TELEPHONE & TELEGRAPH
2513400July 4, 1950Digit absorbing selectorARTHUR CARSON ; TABOR CRONK EARLEAMERICAN TELEPHONE & TELEGRAPH
2522003September 12, 1950Teletypewriter switching systemROBERT WALKER CHARLESAMERICAN TELEPHONE & TELEGRAPH
2522000September 12, 1950Recording telephone systemO'D SHEPHERD JUDSONAMERICAN TELEPHONE & TELEGRAPH
2528269October 31, 1950Selector switch control for automatic telephone systemsDU BOIS DANIEL KINGAMERICAN TELEPHONE & TELEGRAPH
2533342December 12, 1950Tandem switching systemCAMPBELL AVERY ROBERTAMERICAN TELEPHONE & TELEGRAPH
2535872December 26, 1950Signaling systemLEROY SHAFER WILLIAMAMERICAN TELEPHONE & TELEGRAPH
2546334March 27, 1951Telephone substation having hearing aid facilitiesBONAVENTURE DESNOES ARNOLDAMERICAN TELEPHONE & TELEGRAPH
2547575April 3, 1951Telegraph repeaterWHITCOMB GILBO DE MOTTEAMERICAN TELEPHONE & TELEGRAPH
2552704May 15, 1951Holder for booksARMSTRONG FRANK C ; LAUTERBACH FREDERICK J ; WALTER LILLVIK ; POPPER JULIUS SAMERICAN TELEPHONE & TELEGRAPH
2553978May 22, 1951Electronic control telegraph repeater for hub circuit operation in telegraph service boardsTRAPP NEISWINTER JAMESAMERICAN TELEPHONE & TELEGRAPH
2560709July 17, 1951Clipping amplifierWOODWARD WILLIAM REDINAMERICAN TELEPHONE AND TELEGRAPH COMPANY
2568019September 18, 1951Telegraph signal biasing setMARTIN WADE B.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
2569980October 2, 1951Motor control for signal responsive selector mechanismRALEIGH EGGENSPERGER ARLOAMERICAN TELEPHONE & TELEGRAPH
2569972October 2, 1951Two-wire test clipBENNER ARCHIE CAROL ; GUEST WALTER LEROYAMERICAN TELEPHONE AND TELEGRAPH COMPANY
2569926October 2, 1951Two-wire double commutation telegraph systemFAY FRANK HAMERICAN TELEPHONE & TELEGRAPH
2584736February 5, 1952Telegraph switching systemPERRY DONALD BAMERICAN TELEPHONE & TELEGRAPH
2588052March 4, 1952Control circuit for telephone systemsSHEPHERD JUDSON O'D.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
2614632October 21, 1952Apparatus for recording numerals in codeCLOS CHARLESAMERICAN TELEPHONE AND TELEGRAPH COMPANY
2617888November 11, 1952Line lockout arrangementSHEPHERD JUDSON O'D.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
2625609January 13, 1953Telegraph repeaterHANLEY FRANK H.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
2625608January 13, 1953Open telegraph line indicatorHAROLD HANLEY FRANKAMERICAN TELEPHONE & TELEGRAPH
2630496March 3, 1953Two-way polar telegraph repeaterPHILIP HARFORD GEORGEAMERICAN TELEPHONE & TELEGRAPH
2630493March 3, 1953Carrier telegraph systemNEISWINTER JAMES TAMERICAN TELEPHONE & TELEGRAPH
2632054March 17, 1953Hub telegraph repeaterHAROLD HANLEY FRANKAMERICAN TELEPHONE & TELEGRAPH
2635148April 14, 1953Crossbar telephone system with marker release and lockout of defective lineSHEPHERD JUDSON O'D.AMERICAN TELEPHONE AND TELEPHONE COMPANY
2638497May 12, 1953Telegraph call transferring systemMARTIN WADE BAMERICAN TELEPHONE & TELEGRAPH
2640193May 26, 1953Radiant energy signaling systemWILLIAM CARTER ROBERT ; GRIFFITH CURRIER MILTON ; GEORGE EMIG WILLIAM ; VERLEY GLENTZER KENNETHAMERICAN TELEPHONE & TELEGRAPH
2641644June 9, 1953Printing suppression mechanism for teletypewritersWARREN BEYLAND SIDNEYAMERICAN TELEPHONE & TELEGRAPH
2654807October 6, 1953Marker for allotting a link and a senderSHEPHERD JUDSON O'D.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
2664466December 29, 1953Multiway telegraph repeater systemHAROLD HANLEY FRANKAMERICAN TELEPHONE & TELEGRAPH
2672522March 16, 1954Delayed switchboard lamp systemOSBORN YEOMANS LUCIENAMERICAN TELEPHONE & TELEGRAPH
2677011April 27, 1954Teletypewriter message identification systemBURWELL GORDON E.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
2684997July 27, 1954Telephone line finder circuitTHOMPSON BERT HAMERICAN TELEPHONE & TELEGRAPH
2691064October 5, 1954Measuring circuitsSHEPHERD JUDSON O'D.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
2698880January 4, 1955Calling line identifierSHEPHERD JUDSON O'D.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
2698879January 4, 1955Class of service determining circuitSHEPHERD JUDSON O'D.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
2707778May 3, 1955Control circuit with answer back and supervisory signalsNEISWINTER JAMES T.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
2710891June 14, 1955Telegraph service board circuitsFITCH KARL E ; NEISWINTER JAMES T ; PURVIS MATTHEW R ; VANDERLIPPE RICHARD AAMERICAN TELEPHONE & TELEGRAPH
BELL TELEPHONE LABOR INC
2713122July 12, 1955Automatic frequency controlHENLEY EDWARD JOSEPHAMERICAN TELEPHONE AND TELEGRAPH COMPANY
2713087July 12, 1955Full duplex telegraph repeater circuitNEISWINTER JAMES TAMERICAN TELEPHONE & TELEGRAPH
2714701August 2, 1955Voltage regulation circuitJOSEPH HENLEY EDWARDAMERICAN TELEPHONE & TELEGRAPH
2719232September 27, 1955Method of calibrating an oscillatorEHRLICH ROBERT WAMERICAN TELEPHONE & TELEGRAPH
2719878October 4, 1955Alarm circuit for timed impulse supply conductorsMEACHEN OREN RAMERICAN TELEPHONE & TELEGRAPH
2721894October 25, 1955Telegraph loop loadingHAROLD HANLEY FRANKAMERICAN TELEPHONE & TELEGRAPH
2722682November 1, 1955Two-way single sideband radio systemNEISWINTER JAMES T.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
2726281December 6, 1955Telegraph code signal transmitterHANLEY FRANK HAROLDAMERICAN TELEPHONE AND TELEGRAPH COMPANY
2736884February 28, 1956Overcurrent and undercurrent indicating lampOSBORN YEOMANS LUCIENAMERICAN TELEPHONE & TELEGRAPH
2739180March 20, 1956Message address intercommunicating telegraph systemBRITT HORACE JAMERICAN TELEPHONE & TELEGRAPH
2750446June 12, 1956Code translating deviceMARTIN WADE BAMERICAN TELEPHONE & TELEGRAPH
2755445July 17, 1956Interconnection of transmission linesRHODES HAROLD A.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
2755345July 17, 1956Line insulation testing circuitVAUPEL ERNEST WALTERAMERICAN TELEPHONE AND TELEGRAPH COMPANY
2759144August 14, 1956Electrostatic probeWHYMAN WALTER WILLIAMAMERICAN TELEPHONE AND TELEGRAPH COMPANY
2761922September 4, 1956Automatic transmission measuring circuit for successively testing the idle trunks in a group of trunksCARROLL WILLIAM R.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
2761896September 4, 1956Telegraph repeater systemFOLEY DANIEL ELMORE ; HANLEY FRANK HAROLDAMERICAN TELEPHONE AND TELEGRAPH COMPANY
2763845September 18, 1956Short circuiting plug for coaxial lineTHEODORE LAUBE OTTOAMERICAN TELEPHONE & TELEGRAPH
2764753September 25, 1956Carrier failure alarm circuitMARTIN WADE B.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
2771511November 20, 1956Line clearing device for receiver-off-hook conditionMORRIS JR RICHARD SAMERICAN TELEPHONE & TELEGRAPH
2776333January 1, 1957Teletypewriter code controlled selective deviceNEISWINTER JAMES T.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
2777900January 15, 1957Reduction of quadrature distortionCOWAN FRANK AUGUSTUSAMERICAN TELEPHONE AND TELEGRAPH COMPANY
2777251January 15, 1957Self-oscillating double tone whistleAUSTIN BAILEYAMERICAN TELEPHONE & TELEGRAPH
2799739July 16, 1957Method and means for identifying conductor pairsLOWMAN HENRY C. J. ; MURPHY EDWARD M. ; MUSGRAVE JOHN C. ; SOMERS MELVIN L.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
2803706August 20, 1957Trunk circuitALTHOUSE HOMER CAMERICAN TELEPHONE & TELEGRAPH
2804502August 27, 1957Coin collectorIWEMA BERNARDAMERICAN TELEPHONE AND TELEGRAPH COMPANY
2810016October 15, 1957Key telephone set holding circuitKNITTLE GALE LAMERICAN TELEPHONE & TELEGRAPH
2820105January 14, 1958Telephone conference circuitSWAN LUTHER LAMERICAN TELEPHONE & TELEGRAPH
2826637March 11, 1958Automatic level equalizerMACADAM WALTER K.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
2831106April 15, 1958Stabilized automatic frequency control circuit with noise operated squelchCLARK JEAN H.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
2843682July 15, 1958Program transmission reversible networkJR. JOHN SCHRETZMAYER,AMERICAN TELEPHONE AND TELEGRAPH COMPANY
2845478July 29, 1958Selective station calling systemELMORE FOLEY DANIELAMERICAN TELEPHONE & TELEGRAPH
2861136November 18, 1958Switch mechanism for telephone apparatusBRISON JORDAN W.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
2863950December 9, 1958Telephone service concentratorDUNNING SANFORD F. ; MACPHERSON DONALD H.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
BELL TELEPHONE LABORATORIES, INCORPORATED
2866005December 23, 1958Make-busy circuit for trunks in unattended dial officeKUPFERLE ARTHUR T.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
2869015January 13, 1959Method of fabricating a grid electrodeBOLZ ALFRED RAMERICAN TELEPHONE & TELEGRAPH
2878306March 17, 1959Teletypewriter testing systemSMITH WILLIAM RAMERICAN TELEPHONE & TELEGRAPH
2886396May 12, 1959Drawer for storage of keysANTHONY HARRY E ; BURNHAM CHARLES S ; DE MENT JACK R ; HAHN GEORGE W ; HEPLER JR JOHN MAMERICAN TELEPHONE & TELEGRAPH
2891117June 16, 1959Wave translating systemCOLEMAN SIDNEY B.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
2892888June 30, 1959Digital system with error eliminationJAMES RICHARD T. ; RUPPEL ALFRED E.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
BELL TELEPHONE LABORATORIES, INCORPORATED
2896020July 21, 1959Multiple transmitter control circuitGOODMAN CHARLES J ; WALKER CHARLES RAMERICAN TELEPHONE & TELEGRAPH
2901544August 25, 1959Four-party station identification circuitCOLLINS JOHN J.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
2901542August 25, 1959"wake up" or "morning call" system for automatically signaling private branch exchange extension stationsHENCHES EUGENE W ; SHELDON IVAN RAMERICAN TELEPHONE & TELEGRAPH
2908382October 13, 1959Display carrying unit for color telephone setsTURNER HENRY G.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
2909775October 20, 1959AntennaBARNES RICHARD RAMERICAN TELEPHONE & TELEGRAPH
2913526November 17, 1959Calling station identification circuitSMITS JOHN M. ; STURTEVANT MICHAEL J.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
2921116January 12, 1960Teletypewriter automatic alarm reporting systemMAKARY WILLIAM EAMERICAN TELEPHONE & TELEGRAPH
2922847January 26, 1960Distributing systemDUNNING SANFORD F.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
2929970March 22, 1960Telegraph repeater systemFOLEY DANIEL E. ; HANLEY FRANK H.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
2939915June 7, 1960Pulse measurementBRITT HORACE J ; COSH FRANCIS RAMERICAN TELEPHONE & TELEGRAPH
2947803August 2, 1960Clock controlled automatic recycling switching circuitHANLEY FRANK H ; VOTAW CLARENCE JAMERICAN TELEPHONE & TELEGRAPH
2948777August 9, 1960Test set for selector mechanismANDREWS CLAYTON F ; CHAMBERLIN DANIEL W ; NEISWINTER JAMES TAMERICAN TELEPHONE & TELEGRAPH
2952733September 13, 1960Device for automatically producing teletypewriter signalsNEISWINTER JAMES TAMERICAN TELEPHONE & TELEGRAPH
2955151October 4, 1960Teletypewriter switching systemSEMANCIK JOSEPH TAMERICAN TELEPHONE & TELEGRAPH
2958832November 1, 1960Differential-phase correctorCLARK JEAN HAMERICAN TELEPHONE & TELEGRAPH
2958831November 1, 1960EqualizerCLARK JEAN HAMERICAN TELEPHONE & TELEGRAPH
2961488November 22, 1960Permutation code selecting circuitCAMERON PHILLIP G ; CLARK ORVILLE A ; MAXWELL JOHN LAMERICAN TELEPHONE & TELEGRAPH
2965716December 20, 1960Telegraph switching apparatusPRINCE GEORGE EAMERICAN TELEPHONE & TELEGRAPH
2965713December 20, 1960Teletypewriter storage control systemBEYLAND SIDNEY WAMERICAN TELEPHONE & TELEGRAPH
2978542April 4, 1961Impedance-matching networkHUXTABLE RUTH LAMERICAN TELEPHONE & TELEGRAPH
2979556April 11, 1961Semiautomatic teletypewriter tape relay systemANSPACH RUSSELL J ; CLARK ROBERT C ; NEISWINTER JAMES T ; TAMASI PROSPERO AAMERICAN TELEPHONE & TELEGRAPH
2981803April 25, 1961Program switching systemBACHELET ALBERT E ; BIBBINS GEORGE S ; CELENTANO ARNOLD J ; PULLIS GEORGE ABELL TELEPHONE LABOR INC
AMERICAN TELEPHONE & TELEGRAPH
2981799April 25, 1961Data recording systemWINNIFRED RIGGENAMERICAN TELEPHONE & TELEGRAPH
2985720May 23, 1961Trunk concentratorTWOMEY JR WILLIAM CAMERICAN TELEPHONE & TELEGRAPH
2988712June 13, 1961Transmission networkRHODES HAROLD AAMERICAN TELEPHONE & TELEGRAPH
2991353July 4, 1961Automatic frequency control for multitransmitter radio systemBARNES RICHARD RAMERICAN TELEPHONE & TELEGRAPH
2991547July 11, 1961Tool for replacing jack studsBURNS HERBERT WAMERICAN TELEPHONE & TELEGRAPH
2993095July 18, 1961Private branch exchange telephone system involving a cordless type switchboardARNOLD PHILIP H ; DESNOES ARNOLD B ; DOUGLASS STEWART G ; WOOD EDSON RAMERICAN TELEPHONE & TELEGRAPH
2993958July 25, 1961Radiant energy receiving systemBARNES RICHARD RAMERICAN TELEPHONE & TELEGRAPH
2993952July 25, 1961System for testing sequential code selectorNEISWINTER JAMES TAMERICAN TELEPHONE & TELEGRAPH
2997697August 22, 1961Data transmission systemMACADAM WALTER KAMERICAN TELEPHONE & TELEGRAPH
2997543August 22, 1961Reduction of effect of hits on telegraph receptionBRITT HORACE JAMERICAN TELEPHONE & TELEGRAPH
3019388January 30, 1962Signal timing circuitTHORBROGGER HOLGER HAMERICAN TELEPHONE & TELEGRAPH
3020525February 6, 1962Record controlled translatorGARRISON RICHARD J ; HENCHES EUGENE W ; GEORGE SPIROAMERICAN TELEPHONE & TELEGRAPH
3021398February 13, 1962Continuous checking of circuit continuity of a signaling systemBARNETT CECIL H. ; LARGE WAYNE V. K. ; PRUDEN HAROLD M.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
BELL TELEPHONE LABORATORIES, INCORPORATED
3021397February 13, 1962Repeater for checking circuit continuity of a siganling systemBARNETT CECIL H. ; LARGE WAYNE V. K. ; PRUDEN HAROLD M.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
BELL TELEPHONE LABORATORIES, INCORPORATED
3038031June 5, 1962Permutation code selecting circuitCLARK ORVILLE A. ; MAXWELL JOHN L. ; THOMPSON HAROLD K.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
3041410June 26, 1962Delay busy circuitSTENGER WILLIAM JAMERICAN TELEPHONE & TELEGRAPH
3043905July 10, 1962Tandem transmitter start systemSEMANCIK JOSEPH T ; WALKER CHARLES RAMERICAN TELEPHONE & TELEGRAPH
3050584August 21, 1962Conference telephone apparatusMILLER WADE MAMERICAN TELEPHONE & TELEGRAPH
3054949September 18, 1962Method of and apparatus for identifying discrete tip and ring conductor pairs in telephone cableBATES GEORGE W ; CLARK ROBERT FAMERICAN TELEPHONE & TELEGRAPH
3056855October 2, 1962Code translatorYEOMAN JOHN AAMERICAN TELEPHONE & TELEGRAPH
3057965October 9, 1962Braille telephone switchboard unitBANKS HARRY R ; CHARLES NICKERSONAMERICAN TELEPHONE & TELEGRAPH
3078336February 19, 1963Teletypewriter message distributing systemCAMERON PHILLIP G. ; MAXWELL JOHN L.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
3082299March 19, 1963Alarm testing deviceRETER GEORGE AAMERICAN TELEPHONE & TELEGRAPH
3099718July 30, 1963Universal line concentratorFISHER RICHARD GAMERICAN TELEPHONE & TELEGRAPH
3101393August 20, 1963Cordless type switchboardDESNOES ARNOLD B ; FULLERTON DICK P ; SHEA PHILIP DAMERICAN TELEPHONE & TELEGRAPH
3105883October 1, 1963Pressure transducer testing circuitHIGSON JR GEORGE EAMERICAN TELEPHONE & TELEGRAPH
3105882October 1, 1963Pressure transducer testing circuitMEYER WILLIAM CAMERICAN TELEPHONE & TELEGRAPH
3111561November 19, 1963Intercept equipmentDUNNING SANFORD FAMERICAN TELEPHONE & TELEGRAPH
3115552December 24, 1963Telephone switching systemFULWILER EDWARD R ; HAYES RICHARD L ; MASUCCI EUGENE D ; WILSON WARREN MAMERICAN TELEPHONE & TELEGRAPH
3115551December 24, 1963Crossbar switch station concentratorPLYER ROGER AAMERICAN TELEPHONE & TELEGRAPH
3122611February 25, 1964Rate determining equipmentWHEELER CHARLES L.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
3135833June 2, 1964Transmission loss pad control systemMACLEOD DONALD AAMERICAN TELEPHONE & TELEGRAPH
3137770June 16, 1964Telephone call holding arrangementDOYLE MICHAEL EAMERICAN TELEPHONE & TELEGRAPH
3142728July 28, 1964Call distributing circuitMACLEOD DONALD AAMERICAN TELEPHONE & TELEGRAPH
3144707August 18, 1964Dismantling toolHIESTAND IRVIN HAMERICAN TELEPHONE & TELEGRAPH
3156773November 10, 1964Telephone message unit recording systemLAMBERT FREERICKS ; KUKASCH HERBERT L ; LUZON THOMAS BAMERICAN TELEPHONE & TELEGRAPH
3156772November 10, 1964Telephone message unit recording systemLAMBERT FREERICKS ; KUKASCH HERBERT L ; LUZON THOMAS BAMERICAN TELEPHONE & TELEGRAPH
3179931April 20, 1965Alarm transfer systemMIDDAUGH JACK KAMERICAN TELEPHONE & TELEGRAPH
3179750April 20, 1965Pbx in-dialing circuitREILLY WILLIAM MAMERICAN TELEPHONE & TELEGRAPH
3181062April 27, 1965Two-wire test clip with integral capacitive probeSCARLETT REECE MAMERICAN TELEPHONE & TELEGRAPH
3185773May 25, 1965Switching system channel selectionENGEMAN JOHN C ; FRING JR LEO ; HARTMANN GEORGE JAMERICAN TELEPHONE & TELEGRAPH
3214523October 26, 1965Automatic telephone system with camp-on facilitiesHESS BOBBY LAMERICAN TELEPHONE & TELEGRAPH
3226088December 28, 1965Apparatus for pulling cable through underground conduitHABIGHORST HENRY JAMERICAN TELEPHONE & TELEGRAPH
3246082April 12, 1966Telephone hold program systemALFRED LEVYALFRED LEVY
3250859May 10, 1966Universal line concentratorFISHER RICHARD GAMERICAN TELEPHONE & TELEGRAPH
3252088May 17, 1966Apparatus for identifying conductor pairs in a multipair telephone cableLEWIS PALMER J FAMERICAN TELEPHONE & TELEGRAPH
3266018August 9, 1966Telemetering system for reading remotely loacted utility metersHIGGINS NEIL SAMERICAN TELEPHONE & TELEGRAPH
3275754September 27, 1966Call distributing circuitHOWELL JESSE O ; MACLEOD DONALD AAMERICAN TELEPHONE & TELEGRAPH
3283083November 1, 1966Telephone subscriber's line circuitMACLEOD DONALD AAMERICAN TELEPHONE & TELEGRAPH
3287509November 22, 1966Apparatus to visually identify cable pairs in a multipair cable by cable pair encoding meansBOHNENBLUST CLARENCE EAMERICAN TELEPHONE & TELEGRAPH
3288944November 29, 1966Apparatus to audibly identify individual conductors in a multiconductor cableFLEMING NORMAN PAMERICAN TELEPHONE & TELEGRAPH
3288943November 29, 1966Apparatus to visually identify conductor pairs in a multipair cableBOHNENBLUST CLARENCE EAMERICAN TELEPHONE & TELEGRAPH
3293370December 20, 1966Make busy line circuit for key telephone systemsMACLEOD DONALD AAMERICAN TELEPHONE & TELEGRAPH
3301968January 31, 1967Telephone signaling deviceWURST FRANCIS KAMERICAN TELEPHONE & TELEGRAPH
3301967January 31, 1967Automatic call transmitter for repertory dialing using multifreqency pulsesPLYER ROGER AAMERICAN TELEPHONE & TELEGRAPH
3311709March 28, 1967Multidigit register circuit having random interrogating meansANDREW BONTEMPOAMERICAN TELEPHONE & TELEGRAPH
3322901May 30, 1967Pbx dial conference trunk circuitTRIMMER DANIEL RAMERICAN TELEPHONE & TELEGRAPH
3342928September 19, 1967Splice closuresFORNEY JAMES MAMERICAN TELEPHONE & TELEGRAPH
3347990October 17, 1967Stock quotation switching system utilizing calling rate detection meansDOYLE JAMES J ; SARKA AUGUST J ; TANCREDI FREDERICK CAMERICAN TELEPHONE & TELEGRAPH
3355556November 28, 1967Automatic mobile radio telephone switching systemCHANEY RALPH AAMERICAN TELEPHONE & TELEGRAPH
3362419January 9, 1968Cable splicing umbrellaFEYERHERM WILLARD J.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
3366880January 30, 1968Tone controlled wireless telephone extension systemDRIVER JOEL P.AMERICAN TELEPHONE EXTENSION CORPORATION
3377441April 9, 1968Delay equalizer computerBOMAR HOWARD E. ; CLINE HARRY A.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
3379838April 23, 1968Telephone dial tone delay measuring circuitJR. JAMES W. WATKINS,AMERICAN TELEPHONE AND TELEGRAPH COMPANY
3384717May 21, 1968Cordless dispatch telephone switching system having conferencing meansCOSTON SEMER H.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
3387091June 4, 1968Alarm system for telephone pay stationsDEIKER ROBERT W.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
3389234June 18, 1968Access control in telephone testing systemsCOTNER J. ARTHURAMERICAN TELEPHONE AND TELEGRAPH COMPANY
3393274July 16, 1968Subscriber loop and trunk loop range extension circuitINGRAHAM FRANK S.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
3398234August 20, 1968Multiple address circuitTHOMAS ROBERT L.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
3418455December 24, 1968Matched mailing detection systemRACKLIFFE LEROY J. ; RAU RODNEY G.AMERICAN TELEPHONE AND TELEGRAPH COMPANY
3456240July 15, 1969METHOD AND ARRANGEMENT FOR SIGNALING IN A REMOTE CONTROL SYSTEMBRUCE C. HAYSAMERICAN TELEPHONE & TELEGRAPH CO.
3478174November 11, 1969CALL DISTRIBUTING CIRCUIT UTILIZING SEQUENTIAL ACTIVATION OF STATION RINGERSMACLEOD DONALD A ; MADDOCK GEORGE PAMERICAN TELEPHONE & TELEGRAPH
3721887March 20, 1973BATTERY PROTECTION CIRCUITNICKERSON CAMERICAN TELEPHONE & TELEGRAPH
3912874October 14, 1975CONFERENCE ARRANGEMENTBOTTERELL; JOHN JOSEPH ; DAYTON; ROBERT LEWIS ; GUYLER; JAMES RAYMONDAMERICAN TELEPHONE AND TELEGRAPH COMPANY
3914561October 21, 1975APPARATUS AND METHOD FOR TRACING JUMPERS IN A MAIN DISTRIBUTING FRAMESCHARDT COURTNEY HAROLD ; SCHEPIS ALBERT JAMESAMERICAN TELEPHONE & TELEGRAPH
3980840September 14, 1976Conductor identification arrangement for a cable restoration systemKoster, Frederick Henry - Granite Springs, New York, United States (US)American Telephone and Telegraph Company, New York, New York, United States (US), United States company or corporation (02)
4020295April 26, 1977Rotary dial restriction circuitVuotto, Edward Joseph - Katonah, United States of America (US)American Telephone and Telegraph Company, New York, United States of America (US)
4027104May 31, 1977Arrangement for automatically generating alternate telephone station identification codesLevitt, Arthur Paul - Hauppauge, United States of America (US) ; Oakley, Robert Vincent - New City, United States of America (US) ; Patterson, Roy Earl - Bay Shore, United States of America (US)American Telephone and Telegraph Company, New York, United States of America (US)
4093826June 6, 1978Tone signaling conversion apparatusKoster, Frederick Henry - Granite Springs, New York, United States (US)American Telephone and Telegraph Inc., New York, New York, United States (US), United States company or corporation (02)
4112247September 5, 1978Gas feeder pipe assembly including electrical conductorsDembiak, Matthew R. - Clifton, New Jersey, United States (US)Finnegan, John F. - Claymont, Delaware, United States (US); Reece, Thomas B. - Wilmington, Delaware, United States (US); Rudolph, Howard W. - Birdsboro, Pennsylvania, United States (US)Western Electric Company, Inc., New York, New York, United States (US), United States company or corporation (02) American Telephone & Telegraph Co., Inc., New York, New York, United States (US), United States company or corporation (02)
4165446August 21, 1979Data transmission systems (using internal systems equipment, services and procedures of telephone companies)Flowers, Thomas E. - 155 Jackson St., #2003, San Francisco, United States of America (US) ; MacDonnell, Gordon S. - 2 Everson St., San Francisco, United States of America (US)FLOWERS; THOMAS E.
MACDONNELL; GORDON S.
4175271November 20, 1979Helical video tape insert recording editing method with flying erase head and servo controlKaemmerer, Harry - Franklin Township, Somerset Couty, United States of America (US)American Telephone and Telegraph, New York, United States of America (US)
4395594July 26, 1983Method and apparatus for forcing randomization of idle channel seizuresMEYERLE; JOHN A.BELL TELEPHONE LABORATORIES, INCORPORATED
4464650August 7, 1984Apparatus and method for compressing data signals and restoring the compressed data signalsEASTMAN WILLARD L - ; LEMPEL ABRAHAM - ; ZIV JACOB - ; COHN MARTIN -SPERRY CORP, United States of America (US)
4467523August 28, 1984Methods of and apparatus for inserting pins into a substrateChisholm, William M. - Midlothian, United States of America (US)AT&T Technologies, Inc., New York, United States of America (US)
4485370November 27, 1984Thin film bar resistorPoisel, C. Edward - Indianapolis, United States of America (US)AT&T Technologies, Inc., New York, United States of America (US)
D277379January 29, 1985Handset telephone instrumentCooke, Kenneth R. - New York, United States of America (US) ; Porcelli, Vito L. - Ossining, United States of America (US)AT&T Technologies, Inc., New York, United States of America (US)
D277378January 29, 1985Handset telephone instrumentCooke, Kenneth R. - New York, United States of America (US) ; Porcelli, Vito L. - Ossining, United States of America (US)AT&T Technologies, Inc., New York, United States of America (US)
D277480February 5, 1985Wall telephone stand or similar articleJackwicz, William V. - Spring Lake Heights, New Jersey, United States (US)Jampathom, Sompoppol - Ocean, New Jersey, United States (US); McGarvey, John N. - Drexel Hill, Pennsylvania, United States (US); Tilley, Alvin R. - Red Bank, New Jersey, United States (US)AT&T Technologies, New York, New York, United States (US), United States company or corporation (02)
D277479February 5, 1985Telephone standGenaro, Donald M. - Haworth, United States of America (US) ; McGarvey, John N. - Drexel Hill, United States of America (US) ; Stern, Arthur L. - Noblesville, United States of America (US) ; Tilley, Alvin R. - Red Bank, United States of America (US)AT&T Technologies, New York, United States of America (US)
D277958March 12, 1985Telephone instrument base for a handsetCooke, Kenneth R. - New York, New York, United States (US)Porcelli, Vito L. - Ossining, New York, United States (US)AT&T Technologies, Inc., New York, New York, United States (US), United States company or corporation (02)
4516250May 7, 1985Frequency and phase comparator with slip detection capabilityGrimes, Gary J. - Thornton, United States of America (US)AT&T Information Systems, Holmdel, United States of America (US)
D279005May 28, 1985Housing for a telephone handset or similar articleGenaro, Donald M. - Haworth, New Jersey, United States (US)Joffe, Richard M. - Palisades Park, New Jersey, United States (US); McGarvey, John N. - Drexel Hill, Pennsylvania, United States (US)AT&T Technologies, Inc., Berkeley Heights, New Jersey, United States (US), United States company or corporation (02)
4533795August 6, 1985Integrated electroacoustic transducerBaumhauer, John C. - Indianapolis, United States of America (US) ; Hershey, Harold J. - Indianapolis, United States of America (US) ; Poteat, Tommy L. - Bridgewater, United States of America (US)American Telephone and Telegraph, New York, United States of America (US)
AT&T Bell Laboratories, Murray Hill, United States of America (US)
4537799August 27, 1985Selective metallization processDOREY II JOHN K - ; SCHMIDT STEVEN L - ; TOWNSEND WESLEY P -AT & T TECHNOLOGIES INC, United States of America (US)
4542439September 17, 1985Surface mount componentDick, Bernard M. - Lee's Summit, Missouri, United States (US)AT&T Technologies, Inc., New York, New York, United States (US), United States company or corporation (02)
4547644October 15, 1985Apparatus for heating a preform from which lightguide fiber is drawnBair, Wallace C. - Atlanta, United States of America (US) ; Myers, Daryl L. - Lawrenceville, United States of America (US) ; Rogers, Jane W. - Atlanta, United States of America (US)AT&T Technologies, Inc., Berkeley Heights, United States of America (US)
D281599December 3, 1985Housing for a telephone standJoffe, Richard M. - Palisades Park, New Jersey, United States (US)McGarvey, John N. - Drexel, Pennsylvania, United States (US)AT&T Technologies, Inc., Berkeley Heights, New Jersey, United States (US), United States company or corporation (02)