Patent	Date	Title	Inventor	Assignee
232734	September 28, 1880	MICROPHONE.	JOSEPH P. LIVEEMOEE, OF MASSACHUSETTS	AMERICAN BELL TELEPHONE COMPANY.
235199	December 7, 1880	APPARATUS FOR SIGNALING AND COMMUNICATING, CALLED "PHOTOPHONE."	ALEXANDER G. BELL, OF DISTRICT OP COLUMBIA	AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASS.
235616	December 21, 1880	PROCESS OF TREATING SELENIUM TO INCREASE ITS ELECTRIC CONDUCTIVITY.	ALEXANDER G. BELL, OP DISTRICT OP COLUMBIA AND SUMNER TAINTEE OP WATEETOWN MASSACHUSETTS ; BELI	AMERICAN BELL TELEPHONE COMPANY.
237971	February 22, 1881	COMBINED TELEPHONE AND AUTOMATIC SWITCH.	EZEA T. GILLILAND, OF INT).	THE AMERICAN BELL TELEPHONE COMPANY, OP BOSTON, MASS.
239134	March 22, 1881	SIGNALING APPARATUS FOR DISTRICT-TELEPHONE SYSTEMS.	GEORGE LEE ANDERS, OF MASSACHUSETTS	AMERICAN BELL TELEPHONE COMPANY, OF SAME PIACE.
239133	March 22, 1881	TELEPHONE-EXCHANGE SYSTEM.	GEORGE L. ANDERS, OF AND THOMAS D. LOOKWOOD OP MALDEN	AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASS.
239132	March 22, 1881	TELEPHONE-EXCHANGE.	GEORGE LEE ANDERS, OF MASSACHUSETTS	AMERICAN BELL TELEPHONE COMPANY, OP SAME PLACE.
240637	April 26, 1881	ELECTRIC SPEAKING-TELEPHONE.	GEORGE L. ANDERS, OF MASSACHUSETTS	AMERICAN BELL TELEPHONE COMPANY, OP SAME PLACE.
240878	May 3, 1881	TELEPHONE SIGNALING APPARATUS.	GEORGE L-. ANDERS, OP MASSACHUSETTS	AMERICAN BELL TELEPHONE COMPANY, OF SAME PLACE.
241963	May 24, 1881	SECRECY-SWITCH FOR TELEPHONES.	EZBA T. GILLILAND, OF INDIANA	THE AMERICAN BELL TELEPHONE COMPANY, OP BOSTON, MASSACHUSETTS.
245600	August 16, 1881	TELEPHONE-SIGNAL.	GEORGE L. ANDERS, OF AND THOMAS A. WATSON OF EVERETT	AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
246699	September 6, 1881	TELEPHONE.	THOMAS A. WATSON, OP	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
248815	October 25, 1881	TELEPHONE CIRCUIT AND SWITCH.	THOMAS A. WATSON, OF	THE AMERICAN BELL TELEPHONE COMPANY, OP BOSTON, MASSACHUSETTS.
250616	December 6, 1881	SPEAKING-TELEPHONE.	EDWARD L. WILSON, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF SAME PLACE.
251326	December 20, 1881	TELEPHONE POLE-PIECE.	THOMAS A. WATSON, OP	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
251584	December 27, 1881	LOCK FOR TELEPHONES.	J. BENJAMIN HENCK, JR. OF BOSTON MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF SAME PLACE.
251810	January 3, 1882	TELEPHONE-SIGNAL.	GEOEGE LEE ANDERS, OF MASSACHUSETTS	AMERICAN BELL TELEPHONE COMPANY, OP SAME PLACE.
251807	January 3, 1882	SIGNALING AND CIRCUIT-CONNECTING APPARATUS.	THOMAS A. WATSON, OP	THE AMERICAN BELL TELEPHONE COMPANY, OP BOSTON, MASSACHUSETTS.
252641	January 24, 1882	COMPOUND TELEPHONE.	GEORGE LEE ANDERS, OP COUNTY OF MIDDLESEX ENGLAND	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
252986	January 31, 1882	TELEPHONE-EXCHANGE APPARATUS.	GEORGE LEE ANDERS, OF COUNTY OF MIDDLESEX ENGLAND	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
253491	February 14, 1882	TELEPHONE-RECEIVER.	GEOEGB L. ANDERS, OP MASSACHUSETTS	AMERICAN BELL TELEPHONE COMPANY, OP SAME PLACE.
256258	April 11, 1882	TELEPHONE-EXCHANGE SYSTEM.	THOMAS A. WATSON, OP	THE AMERICAN BELL TELEPHONE COMPANY, OP BOSTON, MASSACHUSETTS.
258894	June 6, 1882	TELEPHONIC SWITCH APPARATUS.	HENRY W. COZZENS, OP	THE AMERICAN BELL TELEPHONE COMPANY, OP BOSTON, MASSACHUSETTS.
261511	July 18, 1882	SMOOTHING AND POLISHING THE SURFACES OF CARBON ELECTRODES.	CHAELES W. BEOWN, OF	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
262784	August 15, 1882	TELEPHONE-TRANSMITTER.	WILLIAM W. JACQUES, OP MASSACHUSETTS	THE AMERICAN" BELL TELEPHONE COMPANY, OP SAME PLACE.
265897	October 10, 1882	TELEPHONE-SWITCH.	THOMAS A. WATSON, OF	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
266567	October 24, 1882	MAGNETO-TELEPHONE.	THOMAS A. WATSON, OF	THE AMERICAN BELL TELEPHONE COMPANY, OP BOSTON, MASSACHUSETTS.
270522	January 9, 1883	TELEPHONE-SWITCH.	THOMAS A. WATSON, OF	THE AMERICAN. BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
270438	January 9, 1883	ELECTRIC CABLE.	WILLIAM W. JACQUES, OP MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF SAME PLACE.
271878	February 6, 1883	TELEPHONE.	CHAELBS T. LOSING AND GEORGE WILLIS PIEECE, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF SAME PLACE.
273259	March 6, 1883	BINDING-SCREW FOR ELECTRIC WIRES.	ELLERY 0. COOLIDGE, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF SAME PLACE.
280707	July 3, 1883	AUTOMATIC INDICATOR SWITCH FOR TELEPHONE SYSTEMS.	GEOEGB L. ANDERS, OF MASSACHUSETTS	AMERICAN BELL TELEPHONE COMPANY, OP SAME PLACE.
287356	October 23, 1883	TELEPHONIC SYSTEM.	GEOBGE LEE ANDEKS, OF MASSACHUSETTS	AMERICAN BELL TELEPHONE COMPANY, OF SAME PLACE.
287490	October 30, 1883	TELEPHONE-TRANSMITTER.	BDWAED L. WILSON, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF MASSACHUSETTS.
299074	May 20, 1884	TELEPHONIC RECE1VI NG-INSTRUM ENT.	JOSE DOTTIN HUSBANDS, OF ENGLAND	THE AMERICAN BELL TELEPHONE COMPANY, OP BOSTON, MASSACHUSETTS.
299073	May 20, 1884	TELEPHONIC TRANSM STTER.	JOSE DOTTIN HUSBANDS, OF ENGLAND	THE AMERICAN BELL TELEPHONE COMPANY, OP BOSTON. MASSACHUSETTS.
298783	May 20, 1884	MASSACHUSETTS. RECEIVING-TELEPHONE.	CHAELES B. SCBIBNEE, OF ILLINOIS ASSIGNOE BT MESNE	THE AMERICAN BELL TELEPHONE COMPANY, OP BOSTON,
304667	September 2, 1884	OPERATORS RECEIVING-TELEPHONE.	WILTON L. RICHARDS, OP	THE AMERICAN BELL TELEPHONE COMPANY. OP BOSTON, MASSACHUSETTS.
306241	October 7, 1884	MULTIPLE-CIRCUIT CHANGER.	EZRA T. GILLILAND, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF SAME PLACE.
306240	October 7, 1884	METALLIC-CIRCUIT TE	EZRA T. GILLILAN1), OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OP SAME PLACE.
306238	October 7, 1884	TELEPHONE CIRCUIT AND APPARATUS.	EZRA T. GtLLILAND, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF SAME PLACE.
307290	October 28, 1884	MAGNETO-ELECTRIC MACHINE FOR TELEPHONE-SIGNALING.	EZRA T. GILLILAND, OP MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OP SAME PLACE.
307639	November 4, 1884	ELECTRICAL-CIRCUIT PROTECTOR.	EZRA T. GILLILAND, OP MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OP SAME PLACE.
308956	December 9, 1884	TELEPHONE-TRANSMITTER	WILLIAM H. ECKBET, OF N. Y.	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
313410	March 3, 1885	HANGER FOR ELECTRIC CABLES.	WILLIAM H. ECKERT, JOHN AND EDWARD A. ECKERT OF NEW YORK N. Y.	THE AMERICAN BELL-TELEPHONE COMPANY, OP BOSTON, MASSACHUSETTS.
321323	June 30, 1885	TELEPH ONE-TRANS M iTTER.	HENRY S. TIIOLNBEBKY. OP BOSTON, MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF SAME PLACE.
329152	October 27, 1885	ELECTRICAL-APPARATUS PROTECTOR.	CHARLES F. ELDEN, OF	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
334450	January 19, 1886	MANUFACTURE OF ELECTRICAL CONDUCTORS.	HOWELL E. MASON, OF	THE AMERICAN BELL TELEPHONE COMPANY, OP BOSTON, MASSACHUSETTS
335364	February 2, 1886	TELEPHONE-TRANSMITTER.	ALBEET K. KELLER, OP AND EDWARD H. LYON OP CHELSEA	THE AMERICAN" BELL TELEPHONE COMPANY, OP BOSTON, MASSACHUSETTS.
336268	February 16, 1886	TELEPHONE-TRANSMITTER.	HENRY S. THORNBERRY, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OP SAME PLACE.
336563	February 23, 1886	LOOPING-IN SWITCH.	EZRA T. GILLILAND, OP MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF SAME PLACE
336562	February 23, 1886	ELECTRIC SIGNALING APPARATUS.	EZEA T. GILLILAND, OP MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY; OF SAME PLACE.
348077	August 24, 1886	TELEPHONE.	THOMAS A. WATSON, OF	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
350772	October 12, 1886	TELEPHONE-TRANSMITTER.	GEORGE L. EGBERTS, OP MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF SAME PLACE.
352596	November 16, 1886	HINGE-CONNECTION FOR ELECTRICAL INSTRUMENTS.	GEORGE W. WILSON, OP MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF SAME PLACE.
357452	February 8, 1887	TELEPHONE-TRANSMITTER.	FRANCIS BLAKE, OF	THE AMERICAN" BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
363449	May 24, 1887	TELEPHONY.	JOHN J. CARTY, OP	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
369256	August 30, 1887	ELECTRIC SPEAKING-TELEPHONE,	MORRIS MARTIN, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY.
375544	December 27, 1887	ELECTRO-MAGNETIC ARRESTING AND RELEASING MECHANISM.	ISAIAH H. FAENHAM, OP	THE AMERICAN BELL TELEPHONE COMPANY, OP BOSTON, MASSACHUSETTS.
375862	January 3, 1888	TELEPHONE. jPBCIPICATION Joisilas Part of Letteis Patent No. 375,862, flated January 3,1888.	V. MAXIMILIAN BEETHOLD, OF	THE AMERICAN BELL TELEPHONE COMPANY, OP BOSTON, MASSACHUSETTS.
377073	January 31, 1888	PROTECTING DEVICE FOR ELECTRICAL APPARATUS.	ANGUS S. HIBBAED, OF N. Y.	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
384201	June 5, 1888	TELEPHONE-TRANSMITTER.	EZRA. T. GILLILAND, OF MASSACHUSETTS	AMERICAN BELL TELEPHONE COMPANY, OF SAME PLACE.
386380	July 17, 1888	TELEPHONE-TRANSMITTER.	CHAELBS W. BROWN, OP QUEBEC CANADA	THE AMERICAN BELL TELEPHONE COMPANY, OP BOSTON, MASSACHUSETTS.
392301	November 6, 1888	TELEPHONIC CIRCUIT.	ROBERT M. BAILEY, OP PENNSYLVANIA	THE AMERICAN BELL TELEPHONE COMPANY, OP BOSTON, MASSACHUSETTS.
405461	June 18, 1889	METALLIC TELEPHONE-CIRCUIT.	HENRY L. BURBANK, OF NEW JERSEY	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
412580	October 8, 1889	TELEPHONE-STATION APPARATUS.	BRUNO ABDANK-ABAKANOWICZ, OF	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
412579	October 8, 1889	MICROPHONIC TRANSMITTER.	BRUNO ABDANK - ABAKANOWICZ, OF FRANCE	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
419645	January 21, 1890	TELEPHONIC CIRCUIT AND APPARATUS.	JOHN N. CULBERTSON, OF NEW YORK	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
425863	April 15, 1890	TELEPHONE SYSTEM.	JOHN J. CARTY, OP N. Y.	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
425862	April 15, 1890	MULTIPLE TELEPHONY.	JOHN J. CARTY, OF N. Y.	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
438982	October 21, 1890	TELEPHONE-EXCHANGE APPARATUS.	FRANKLIN G. BEACH, OF ILLINOIS	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
438784	October 21, 1890	TELEPHONE.	JOHN OIL II. STUT, OF CALIFORNIA	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
441066	November 18, 1890	THERMAL PROTECTOR.	HAMMOND V. HAYES, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF MASSACHUSETTS.
442139	December 9, 1890	MULTIPLE TELEGRAPH OR TELEPHONE.	ABNER M. ROSEBRUGII, OF CANADA	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
447220	February 24, 1891	TRANSMITTER-CIRCUIT.	ANTHONY C. WHITE, OP MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF SAME PLACE.
447485	March 3, 1891	TELEPHONE-EXCHANGE APPARATUS.	FRANKLIN G. BEACH, OF ILLINOIS	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
449679	April 7, 1891	MULTIPLEX TELEPHONY.	WILLIAM W. JACQUES, OF	THE AMERICAN BELL TELEPHONE COMPANY, OP BOSTON, MASSACHUSETTS.
453483	June 2, 1891	TELEPHONE-CIRCUIT.	WILLIAM W. JACQUES, OF	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
455986	July 14, 1891	TERMINAL FOR ELECTRIC BATTERIES.	HAMMOND V. HAYES, OF MASSACHUSETTS AND ANGUS S. 1IIB-BARD OF MORRISTOWN NEW JERSEY	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON. MASSACHUSETTS.
456817	July 28, 1891	ELECTRIC-CIRCUIT-CHANGING APPARATUS.	HAMMOND V. HAYES, OF	THE AMERICAN BELL TELEPHONE COMPANY, OP BOSTON, MASSACHUSETTS.
457477	August 11, 1891	AUTOMATIC TELEPHONE SYSTEM.	HAMMOND Y. HAYES, OF AND HENRY D. SEARS OF LYNN	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
458753	September 1, 1891	MASSACHUSETTS. PROTECTIVE FUSE.	HAMMOND V. HAYES, OF AND ANTHONY C. WHITE OF BOSTON	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON,
463569	November 17, 1891	COMBINED TELEGRAPH AND TELEPHONE.	EMILE BERLINER, OF DISTRICT OF COLUMBIA	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
469475	February 23, 1892	ELECTRIC CABLE.	HAMMOND V. HAYES, OF AND JOHN S. STONE OF BOSTON .	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
469474	February 23, 1892	TELEPHONE-SUPPORT.	HAMMOND V. HAYES, OF	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
469765	March 1, 1892	DISTRIBUTING-BOX FOR CABLE SYSTEMS.	CHARLES II. WILSON, OF ILLINOIS	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
473044	April 19, 1892	CONDUIT FOR ELECTRIC WIRES.	CIIAELES II. WILSON, OF ILLINOIS	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
474323	May 3, 1892	TELEPHONE-CIRCUIT.	HAMMOND V. HAYES, OF	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
481483	August 23, 1892	TELEPHONE SYSTEM.	RICHARD N. DYER, OF NEW JERSEY	THE AMERICAN BELL TELEPHONE COMPANY, OP BOSTON, MASSACHUSETTS.
485311	November 1, 1892	TELEPHONE	WHITE ANTHONY C -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)
485279	November 1, 1892	COMBINED TELEGRAPHY AND TELEPHONY.	WILLIAM W. JACQUES, OF	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
487219	November 29, 1892	TELEPHONE.	HAMMOND Y. HAYES, OF AND WILTON L. RICHARDS OF MALDEN	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
487102	November 29, 1892	DEVELOPMENT AND DISTRIBUTION OF ELECTRICITY.	JOHN S. STONE, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF SAME PLACE.
492484	February 28, 1893	TELEPHONE CENTRAL-STATION CIRCUIT.	JAMES L. McQUARRIE, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF SAME PLACE.
495090	April 11, 1893	GRANULATED MATERIAL FOR TRANSMITTING-TELEPHONES.	WILLIAM W. JACQTJES, OF	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS,
501087	July 11, 1893	ELECTRIC SIGNALING.	THOMAS D. LOCK WOOD, OP MASSACHUSETTS AND SHERWOOD J. LARNED OF EVANSTON ILLINOIS	THE AMERICAN" TELEPHONE AND TELEGRAPH COMPANY, OF NEW YORK, AND THE AMERICAN BELL TELEPHONE COMPANY,
502472	August 1, 1893	ELECTRIC ANNUNCIATOR.	THEODORE SPENCER, OF	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
502466	August 1, 1893	TELEPHONE CIRCUIT AND APPARATUS.	JAMES L. McQUAERIE, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF SAME PLACE.
505730	September 26, 1893	TELEPHONE-CIRCUIT.	THEODORE SPENCER, OP	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
507424	October 24, 1893	DISTRIBUTING-FRAME FOR ELECTRIC WIRES.	WILLIAM S. FORD, OP AND BERTRAM A. LENFEST OF WAKE-FIELD	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
507694	October 31, 1893	TELEPHONE-TRANSMITTER CIRCUIT AND APPARATUS.	JOHN S. STONE, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF SAME PLACE.
507568	October 31, 1893	TELEPHONE-CIRCUIT.	JOHN S. STONE, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OP SAME PLACE.
507565	October 31, 1893	TEST AND SIGNAL CIRCUIT AND APPLIANCE.	THEODORE SPENCER, OF	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
508255	November 7, 1893	TELEPHONE-CIRCUIT.	JOHN S. STONE, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF SAME PLACE.
509484	November 28, 1893	MASSACHUSETTS. SIGNAL APPARATUS FOR TELEPHONE SYSTEMS.	JOSEPH J. OCONNELL, 01? CHICAGO, ILLINOIS, ASSIGNOR, BY MESNE	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON",
509477	November 28, 1893	MASSACHUSETTS. TRUNK-LINE SIGNAL.	EDMUND S. C. MAY, OF ILLINOIS ASSIGNOR BY MESNE	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON,
509965	December 5, 1893	TELEPHONIC TRANSMISSION.	JOHN S. STONE, OP MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF SAME PLACE.
510863	December 12, 1893	TELEPHONE-EXCHANGE SYSTEM.	WILLIAM W. JACQUES. OF NEWTON",	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
515531	February 27, 1894	SWITCH AND CIRCUIT FOR TELEPHONE-EXCHANGES.	JOSEPH J. OCONNELL, OF ILLINOIS ASSIGNOR BY MESNE	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
516982	March 20, 1894	TELEPHONE.	ANTHONY C. WHITE, OP MASSACHUSETTS; FANNIE A. WHITE ADMINISTRATRIX OP ANTHONY C. WHITE DECEASED	THE AMERICAN BELL TELEPHONE COMPANY, OF SAME PLACE.
518092	April 10, 1894	PERMANENT MAGNET.	ARTHUR THOMAS COLLIER, OF ENGLAND	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
518367	April 17, 1894	MULTIPLEX TELEPHONY.	WILLIAM W. JACQUES, OP	THE AMERICAN"BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
521220	June 12, 1894	ELECTRIC TELEPHONE.	WILTON L. RICHAEDS, OF	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
522925	July 10, 1894	OPERATORS TELEPHONE-CIRCUIT.	THOMAS C. WALES, JR. OF BOSTON MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF SAME PLACE.
522999	July 17, 1894	ELECTRICAL-CONNECTION CORD.	ALFRED II. MoCULLOCH, OP MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OP MASSACHUSETTS.
523630	July 24, 1894	TELEPHONE.	STEPHEN D. FIELD, OF	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
524173	August 7, 1894	VARIABLE-RESISTANCE MEDIUM FOR TELEPHONES.	WILLIAM W. JACQUES, OF	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
524172	August 7, 1894	VARIABLE-RESISTANCE MEDIUM FOR TELEPHONES.	WILLIAM W. JACQUES, OF	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
525703	September 11, 1894	TELEPHONE-CALL SYSTEM.	EZRA T. GILLILAND, OF NEW YORK	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
525702	September 11, 1894	TELEPHONE-CALL SYSTEM.	EZRA T. GILLILAND, OF NEW YORK	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
526608	September 25, 1894	COIN-CONTROLLED TELEPHONE APPARATUS.	CHARLES C. BLAKE, OF MASSACHUSETTS	THE AMERICAN" BELL TELEPHONE COMPANY, OF MASSACHUSETTS.
528040	October 23, 1894	TELEPHONE CIRCUIT AND SIGNAL.	THEODORE SPENCER, OF	THE AMERICAN BELL TELEPHONE COMPANY, OP BOSTON, MASSACHUSETTS.
529373	November 20, 1894	ELECTROMAGNETIC APPARATUS.	STEPHEN D. FIELD, OF	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
530516	December 11, 1894	SUPPRESSION OF SELF-INDUCTIVE OBSTRUCTION IN ELECTROMAGNETIC APPARATUS,	STEPHEN D. FIELD, OF	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
531078	December 18, 1894	TELEPHONE SPEAKING-TUBE SYSTEM.	THOMAS 0. WALES, JR. OF BOSTON MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF SAME PLACE.
532605	January 15, 1895	ANNUNCIATOR FOR TELEPHONIC CIRCUITS.	THEODORE SPENCER, OF	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
533015	January 22, 1895	TELEPHONE SWITCHING APPARATUS AND CIRCUIT,	JOSEPH JOHN OCONNELL, OF ILLINOIS	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
532769	January 22, 1895	CALL-GENERATOR CONNECTION.	FRANK B. COOK, OF ILLINOIS	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
535289	March 5, 1895	TELEPHONY.	WILLIAM W. JACQUES, OF	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
536104	March 19, 1895	ELECTROMAGNETIC SIGNAL.	THEODORE SPENCER, OF	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
536095	March 19, 1895	PROTECTIVE DEVICE FOR ELECTRICAL APPLIANCES.	JOSEPH J. OOONNELL, OF ILLINOIS	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
536787	April 2, 1895	TELEPHONE-EXCHANGE SYSTEM AND APPARATUS.	HAMMOND V. HAYES AND THEODORE SPENOEE, OF	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
536655	April 2, 1895	TERMINAL ATTACHMENT FOR FLEXIBLE CONDUCTORS.	WILTON L. EICHAEDS, OF	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
538329	April 30, 1895	MAGNETO-GENERATOR.	EZRA T. GILLILAND, OP NEW YORK	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
538328	April 30, 1895	MAGNETO-TRANSMITTER.	EZRA T. GILLILAND, OP NEW YORK	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
539170	May 14, 1895	MAGNETO CALL APPARATUS.	FRANK B. COOK, OF ILLINOIS	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
540117	May 28, 1895	CONDUCTOR-DISTRIBUTING FRAME.	THEODORE SPENCER, OF	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
540969	June 11, 1895	TELEPHONE,	STEPHEN DUDLEY FIELD, OF	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
541152	June 18, 1895	DiSTRIB.UTING-FRAME FOR TELEPHONE-CIRCUIT CONDUCTORS.	FRANK B. COOK, OF ILLINOIS	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
541148	June 18, 1895	CURRENT-STRENGTH INDICATOR.	PERCIVAL G. BURGESS, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF SAME PLACE.
542913	July 16, 1895	TELEPHONIC RELAY OR REPEATING SYSTEM.	CHESTER H. ARNOLD, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY. OF SAME PLACE.
542658	July 16, 1895	TELEPHONE REPEATlNG-CIRCUiT AND APPLIANCES,	WILTON L. RICHARDS, OF	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
542657	July 16, 1895	TELEPHONE RELAY APPARATUS.	WILTON L. RICHARDS, OF	THE AMERICAN BELL TELEPHONE COMPANY, OP BOSTON, MASSACHUSETTS.
542619	July 16, 1895	TELEPHONIC REPEATING CIRCUIT AND APPARATUS.	CHESTER H. ARNOLD, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF SAME PLACE.
542618	July 16, 1895	TELEPHONE RELAY OR REPEATER.	CHESTER II. ARNOLD, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OP SAME PLACE.
543559	July 30, 1895	SIGNALING APPARATUS FOR TELEPHONE-EXCHANGE CIRCUITS.	JOSEPH J. OCONNELL, OF ILLINOIS	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
544546	August 13, 1895	APPARATUS FOR TELEPHONE-EXCHANGES.	JOSEPH J. OCONNELL, OF ILLINOIS ASSIGNOR BY MESNE	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
544545	August 13, 1895	SIGNAL APPARATUS FOR TELEPHONE-EXCHANGES.	JOSEPH J. OCONNELL, OF ILLINOIS ASSIGNOR BY MESNE	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
544901	August 20, 1895	MASSACHUSETTS. TELEPHONE-EXCHANGE APPARATUS.	JOSEPH J. OCONNELL, OF ILLINOIS ASSIGNOR BY MESNE	THE AMERICAN BELL TELEPHONE COMPANY, OP BOSTON,
547405	October 1, 1895	TELEPHONE-TOLL APPARATUS.	GEORGE K. THOMPSON, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF MASSACHUSETTS.
550204	November 19, 1895	TOLL-COLLECTING TELEPHONE APPARATUS.	GEORGE K. THOMPSON, OP	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
550192	November 19, 1895	ELECTRIC PROTECTIVE APPLIANCE.	ALFRED II. McCULLOCII, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF SAME PLACE.
550260	November 26, 1895	TELEPHONE-CIRCUIT SIGNAL.	MARK A. EDSON, OF ILLINOIS	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
551060	December 10, 1895	TELEPHONE-CIRCUIT.	JOHN S. STONE, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF SAME PLACE.
551056	December 10, 1895	MULTIPLE-SWITCHBOARD SYSTEM.	THEODORE SPENCER, OF AND THOMAS C. WALES JR. OF BOSTON	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON-, MASSACHUSETTS.
552420	December 31, 1895	SIGNALING AND LOCK-OUT APPARATUS FOR TELEPHONE-STATIONS.	JOHN D. CLARKE, OF ILLINOIS	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
552173	December 31, 1895	ELECTRIC TELEPHONE.	STEPHEN D. FIELD, OF	THE AMERICAN BELL TELEPHONE COMPANY, OP BOSTON, MASSACHUSETTS.
552735	January 7, 1896	TRUNK-LINE FOR TELEPHONE-EXCHANGES.	THOMAS C. WALES, JR. OF BOSTON MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF SAME PLACE.
552734	January 7, 1896	TELEPHONE SWITCHBOARD AND CIRCUIT.	THOMAS C. WALES, JR. OF BOSTON MASSACHUSETTS AND THEODORE SPENCER OF PHILADELPHIA PENNSYLVANIA	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
553179	January 14, 1896	TELEPHONE-CIRCUIT.	EDWARD SLADE, OF AND JOHN S. STONE OF BOSTON	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
555707	March 3, 1896	SIGNALING-CIRCUIT.	JOSEPH J. OCONNELL, OF ILLINOIS	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
556034	March 10, 1896	TELEPHONE SPEAKING-TUBE SYSTEM.	JOHN" S. STONE, OF AND GEORGE K. THOMPSON OP MALDEN	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
557527	March 31, 1896	SWITCHBOARD-SIGNAL.	ISAIAH II. FARNIIAM, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
558168	April 14, 1896	CALL-COUNTER FOR TELEPHONES.	STEPHEN" D. FIELD, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
558167	April 14, 1896	TELEPHONE-SERVICE REGISTER.	STEPHEN D. FIELD, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
558686	April 21, 1896	TELEPHONE TRUNK-CIRCUIT.	WILLIAM II. HENNESSEY, OF ILLINOIS	THE AMERICAN BELL TELEPHONE COMPANY, OP BOSTON, MASSACHUSETTS.
558584	April 21, 1896	TELEPHONE.	STEPHEN D. FIELD, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
559367	May 5, 1896	SWITCHING APPARATUS FOR TELEPHONE-EXCHANGES.	JOSEPH P. DAVIS, OP N. Y.	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
559366	May 5, 1896	SWITCHBOARD FOR TELEPHONE-EXCHANGES.	JOSEPH P. DAVIS, OF 1ST. Y.	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
560617	May 19, 1896	TELEPHONE SIGNAL AND SIGNALING-CIRCUIT.	ACHILLES DE KHOTINSKY, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF SAME PLACE.
560403	May 19, 1896	TELEPHONE-RECEIVER.	STEPHEN D. FIELD, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
560762	May 26, 1896	TELEPHONE CIRCUIT AND APPARATUS.	JOHN S. STONE, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OE SAME PLACE.
560761	May 26, 1896	TELEPHONE-CIRCUIT.	JOHN S. STONE, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OE SAME PLACE.
562435	June 23, 1896	SYSTEM OF CURRENT SUPPLY FOR TELEPHONE-CIRCUITS.	JOHN S. STONE, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF SAME PLACE.
563692	July 7, 1896	TELEPHONE SIGNALING-CIRCUIT.	JOHN" >S. STONE, OF BOSTON, MASSACHUSETTS,	THE AMERICAN BELL TELEPHONE COMPANY, OE SAME PLACE.
564084	July 14, 1896	PROTECTIVE APPLIANCE FOR ELECTRICAL APPARATUS.	ACHILLES DE KIIOTINSKY, OP MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF SAME PLACE.
565080	August 4, 1896	TELEPHONE-SUBSTATION APPARATUS.	ACHILLES DE KIJOTDTSKY, OF MASSACHUSETTS	TITE AMERICAN BELL TELEPHONE COMPANY, OF SAME PLACE.
569401	October 13, 1896	MULTIPLE-STATION TELEPHONE-CIRCUIT.	JOHN A. BARRETT, OF VERMONT	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
571669	November 17, 1896	LIGHTNING-ARRESTER.	ACHILLES DE KIIOTLNSKY, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF SAME PLACE.
571351	November 17, 1896	ELECTROMAGNETIC SIG NAL-RECEIVING INSTRUMENT.	STEPHEN I). FIELD, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
573117	December 15, 1896	TELEPHONE-CIRCUIT LINE-SIGNAL.	THOMAS C. WALES, JR. AND CHESTER H. ARNOLD OF BOSTON MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF SAME PLACE.
575653	January 19, 1897	ELECTRICAL CONDENSER.	JOHN C. LEE, OF WILLIAM R. WESTCOTT OF CAMBRIDGE AND ERNEST C. ROBES OF MEDFORD MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
575394	January 19, 1897	MAGNETO-TELEPHONE.	STEPHEN D. FIELD, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
576472	February 2, 1897	TELEPHONE SIGNAL-TRANSMITTER.	ERNEST C. ROBES, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
577214	February 16, 1897	RESONANT ELECTRIC CIRCUIT.	JOHN S. STONE, OF MASSACHUSETTS	THE AMERICAN BELL TELEPPIONE COMPANY, OF SAME PLACE.
578275	March 2, 1897	ELECTRIC CIRCUIT.	JOHN S. STONE, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF SAME PLACE.
580166	April 6, 1897	TELEPHONE-CIRCUIT.	.JOHN S. STONE, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF SAME PLACE.
585185	June 29, 1897	EARTH CONDUCTOR OR GROUND-WIRE ATTACHMENT.	HENRY MIDDLEBEOOK CRANE, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF SAME PLACE.
586888	July 20, 1897	TELEPHONE SIGNALING RELAY AND CIRCUIT.	ARTHUR S. WILLIAMS, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OP BOSTON, MASSACHUSETTS.
586685	July 20, 1897	TELEPHONE-SWITCHBOARD.	HAMMOND V. HAYES, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
587226	July 27, 1897	TELEPHONE TRUNK-CIRCUIT.	JOSEPH J. OCONNELL, OF ILLINOIS	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
587467	August 3, 1897	TELEPHONE CENTRAL-STATION S.IGNALING-CIRCUIT.	GEOEGE K. THOMPSON, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
588206	August 17, 1897	PROTECTIVE APPLIANCE FOR ELECTRICAL APPARATUS.	ARTHUR S. WILLIAMS, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OP BOSTON, MASSACHUSETTS.
589431	September 7, 1897	TELEPHONIC MEASURED-SERVICE SYSTEM.	HAMMOND V. HAYES, OF AND THOMAS C. WALES JR. OF NEWTON MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
590304	September 21, 1897	COMMON-BATTERY MULTIPLE SWITCHBOARD.	HENRY MIDDLEBEOOK CRANE, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF SAME PLACE.
592972	November 2, 1897	CABLE-BENDING APPLIANCE.	FRANK E. LEONARD, OF ILLINOIS	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS,
596418	December 28, 1897	MAGNETO-ELECTRIC SIGNALING APPARATUS.	ARTHUR S. WILLIAMS, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
596197	December 28, 1897	ELECTRICAL PROTECTIVE APPLIANCE.	ARTHUR S. WILLIAMS, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OP BOSTON, MASSACHUSETTS.
602174	April 12, 1898	TELEPHONE-TRANSMITTER.	HERBERT E. SHREEVE, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF SAME PLACE.
609374	August 16, 1898	TELEPHONE REPEATER OR RELAY,	JOHN STONE STONE, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF SAME PLACE.
609331	August 16, 1898	TELEPHONIC MEASURED-SERVICE SYSTEM.	WILLIAM W. DEAN, .OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF SAME PLACE.
617145	January 3, 1899	TELEPHONE-EXCHANGE SWITCH AND SIGNAL APPARATUS.	WILLIAM W. DEAN, OP MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF SAME PLACE.
619240	February 7, 1899	TOLL COUNTER OR REGISTER FOR TELEPHONIC CIRCUITS.	GEOEGE K. THOMPSON, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
620004	February 21, 1899	TELEPHONE-SWITCHBOARD CIRCUIT.	THOMAS C. WALES, JR. OF NEWTON MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OP BOSTON, MASSACHUSETTS.
620002	February 21, 1899	SWITCHBOARD-CONNECTING CORD-CIRCUIT.	GEORGE K. THOMPSON, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
620745	March 7, 1899	To all ivliom it inny concern:<	HENRY MIDDLE BROOK CRANE, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF SAME PLACE.
623437	April 18, 1899	TELEPHONE-SWITCHBOARD CIRCUIT.	EDWIN II. SMYTIIE, OF ILLINOIS	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
623583	April 25, 1899	TELEPHONIC TRUNK-CIRCUIT.	THOMAS C. WALES, JR. OF NEWTON AND HENRY MIDDLEBROOK CRANE OF BOSTON MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
623579	April 25, 1899	DIFFERENTIAL ELECTROMAGNET.	JOHN STONE STONE, OF MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OP SAME PLACE.
626146	May 30, 1899	TELEPHONE TOLL-CIRCUIT.	HENRY M. CRANE, OF AND THOMAS C. WALES JR. OF NEWTON MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
626111	May 30, 1899	TELEPHONE CONNECTING-CIRCUIT.	GEORGE K. THOMPSON, OF AND THOMAS C. WALES JR. OF NEWTON MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.
626826	June 13, 1899	TELEPHONE-CIRCUIT.	PERCIVAL G. BURGESS, OF MEXICO AND HENRY W. WILDER OF SPRINGFIELD MASSACHUSETTS	THE AMERICAN BELL TELEPHONE COMPANY, OF BOSTON, MASSACHUSETTS.,______
627814	June 27, 1899	TELEPHONE-EXCHANGE SWITCH APPARATUS AND CIRCUITS.	ARNOLD CHESTER H -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)
627813	June 27, 1899	TELEPHONE-CIRCUIT AND SWITCHING APPARATUS.	WALES THOMAS C JR -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)
628046	July 4, 1899	REPEATING AND TRANSMITTING TELEPHONE.	THOMPSON GEORGE K -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)
628567	July 11, 1899	TELEPHONE SWITCH APPARATUS, SIGNAL, AND CIRCUIT.	WALES THOMAS C JR -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)
630841	August 15, 1899	COMBINED TELEGRAPH AND TELEPHONE.	BAILEY ROBERT M -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)
632296	September 5, 1899	TELEPHONE SWITCHBOARD AND CIRCUITS.	WALES THOMAS C JR - ; WATERSON KARL W -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)
633403	September 19, 1899	TELEPHONE-EXCHANGE SWITCHBOARD SIGNALING APPARATUS.	WALES THOMAS C JR -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)
636872	November 14, 1899	TELEPHONE TRUNK-LINE SIGNALING.	WALES THOMAS C JR -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)
638152	November 28, 1899	TELEPHONY.	STONE JOHN STONE -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)
640404	January 2, 1900	TELEPHONE CENTRAL-STATION APPARATUS AND CIRCUITS.	MCMEEN SAMUEL G -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)
641743	January 23, 1900	TELEPHONE-SWITCHBOARD APPARATUS AND APPLIANCE.	WALES THOMAS C JR -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)
641737	January 23, 1900	REGISTERING APPARATUS AND CIRCUIT FOR TELEPHONIC MEASURED SERVICE.	THOMPSON GEORGE K -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)
644647	March 6, 1900	SELECTIVE SIGNAL FOR TELEPHONE-CIRCUITS.	THOMPSON GEORGE K - ; ROBES ERNEST C -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)
647588	April 17, 1900	COMBINED TELEPHONE AND ELECTROTHERMOSTATIC FIRE-ALARM SYSTEM.	THOMPSON GEORGE K -	AMERICAN BELL TELEPONE COMPANY, United States of America (US)
647565	April 17, 1900	ELECTRIC THERMOSTAT FOR FIRE-ALARMS.	HAYES HAMMOND V - ; THOMPSON GEORGE K -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)
648805	May 1, 1900	SERVICE-METER APPARATUS AND CIRCUIT FOR TELEPHONE-SUBSTATIONS.	SHREEVE HERBERT E -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)
654630	July 31, 1900	RADIOPHONY.	HAYES HAMMOND V - ; CRAM ERNEST R -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)
656333	August 21, 1900	TELEPHONE-SWITCHBOARD APPARATUS.	WALES THOMAS C JR -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)
656796	August 28, 1900	SIGNAL-RECEIVING RELAY.	THOMPSON GEORGE K - ; ROBES ERNEST C -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)
657316	September 4, 1900	TELEPHONE TRUNK-CIRCUIT.	HULFISH DAVID S -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)
657315	September 4, 1900	TELEPHONE SWITCHING APPARATUS.	HULFISH DAVID S -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)
657305	September 4, 1900	MEANS FOR RELIEVING TELEPHONE-LINES FROM DELETERIOUS ELECTRICAL CHARGES.	ARNOLD CHESTER H -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)
664191	December 18, 1900	CALL-REGISTER OR SERVICE-METER CIRCUIT FOR SWITCHBOARD APPARATUS.	THOMPSON GEORGE K -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)
666213	January 15, 1901	TELEPHONE-EXCHANGE CIRCUIT AND APPLIANCE.	THOMPSON GEORGE K -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)
666444	January 22, 1901	TELEPHONE-EXCHANGE CENTRAL-STATION SWITCHBOARD APPARATUS.	THOMPSON GEORGE KNOX - ; ROBES ERNEST CLIFTON -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)
666706	January 29, 1901	SELECTIVE SIGNALING AND REGISTERING APPARATUS CIRCUIT.	SHREEVE HERBERT E -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)
666698	January 29, 1901	TELEPHONE-EXCHANGE CIRCUIT AND SIGNALING APPARATUS.	RORTY MALCOLM C -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)
668022	February 12, 1901	SIGNAL-CONTROLLING RELAY.	SHREEVE HERBERT E -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)
668554	February 19, 1901	ELECTRICAL RELAY AND CIRCUIT.	BULLARD ALBERT M - ; FALK LOUIS A -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)
669901	March 12, 1901	SYSTEM OF CENTRAL CURRENT-SUPPLY FOR PRIVATE-LINE TELEPHONE-CIRCUITS.	RORTY MALCOLM C -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)
669900	March 12, 1901	TELEPHONE SERVICE-METER AND CIRCUIT.	HULFISH DAVID S -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)
682152	September 3, 1901	TELEPHONE-EXCHANGE APPARATUS.	STETSON ALMON B -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)
685401	October 29, 1901	UNIVERSAL CALL-CIRCUIT AND APPARATUS FOR TOLL SERVICE.	HIBBARD ANGUS S -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)
686340	November 12, 1901	SERVICE-METER APPARATUS FOR TELEPHONE-CIRCUITS.	ROBES ERNEST C -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)
709740	September 23, 1902	AUTOMATIC TELEPHONE-EXCHANGE SYSTEM AND APPARATUS.	BULLARD ALBERT M - ; RORTY MALCOLM C -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)
709739	September 23, 1902	AUTOMATIC TELEPHONE-EXCHANGE.	BULLARD ALBERT M -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)
712455	October 28, 1902	BUSY-TEST SYSTEM.	HULFISH DAVID S -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)
711973	October 28, 1902	SIGNALING AND SWITCHBOARD APPARATUS FOR TELEPHONE-EXCHANGE CIRCUITS.	HULFISH DAVID S -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)
716287	December 16, 1902	KEY-PLATE FOR USE IN THE MANUFACTURE OF TUNE PLATES OR CYLINDERS.	SCHIPPERS FRANK -	AMERICAN BELL AND CHIME COMPANY, United States of America (US)
726476	April 28, 1903	ELECTRICAL DISTRIBUTION AND SELECTIVE DISTRIBUTION.	STONE JOHN STONE -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)
726368	April 28, 1903	ELECTRICAL DISTRIBUTION AND SELECTIVE DISTRIBUTION.	STONE JOHN STONE -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)
729104	May 26, 1903	ELECTRICAL APPARATUS AND CIRCUITS FOR ELECTRICAL DISTRIBUTION AND SELECTIVE DISTRIBUTION.	STONE JOHN STONE -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)
729103	May 26, 1903	METHOD OF ELECTRICAL DISTRIBUTION AND SELECTIVE DISTRIBUTION.	STONE JOHN STONE -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)
743564	November 10, 1903	AUTOMATIC TELEPHONE-EXCHANGE.	RORTY MALCOLM C - ; BULLARD ALBERT M -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)
755944	March 29, 1904	PNEUMATIC MUSICAL APPARATUS.	SCHIPPERS FRANK -	AMERICAN BELL AND CHIME COMPANY, United States of America (US)
761995	June 7, 1904	APPARATUS FOR REDUCING ATTENUATION OF ELECTRICAL WAVES.	PUPIN MICHAEL I -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)
773472	October 25, 1904	ELECTRIC CIRCUIT.	CAMPBELL GEORGE A -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)
773372	October 25, 1904	ELECTRIC CIRCUIT.	CAMPBELL GEORGE A -	AMERICAN BELL TELEPHONE COMPANY, United States of America (US)