Name Size Creator Creation Date Labels Comment  
PDF File 1705551.pdf 722 kB Shaun Ewing Mar 19, 1929 00:00
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US-1705551-A // Electrooptical transmission // Abraham Leonard G. // American Telephone & Telegraph
PDF File 1705561.pdf 506 kB Shaun Ewing Mar 19, 1929 00:00
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US-1705561-A // Electrical testing system // Edwards Paul G. ; Herrington Harold W. // American Telephone & Telegraph
PDF File 1706472.pdf 353 kB Shaun Ewing Mar 26, 1929 00:00
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US-1706472-A // Echo suppressor // Wright Sumner B. // American Telephone & Telegraph
PDF File 1706490.pdf 394 kB Shaun Ewing Mar 26, 1929 00:00
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US-1706490-A // Carrier-amplitude control in radio systems // Holden William H. T. // American Telephone & Telegraph
PDF File 1706538.pdf 409 kB Shaun Ewing Mar 26, 1929 00:00
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US-1706538-A // Testing television and like system // Mertz Pierre // American Telephone & Telegraph
PDF File 1707260.pdf 242 kB Shaun Ewing Apr 02, 1929 00:00
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US-1707260-A // Recording and reproducing of sound waves // Fetter Charles H. // American Telephone & Telegraph
PDF File 1707261.pdf 210 kB Shaun Ewing Apr 02, 1929 00:00
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US-1707261-A // Recording and reproduction of sound waves // Fetter Charles H. // American Telephone & Telegraph
PDF File 1707265.pdf 326 kB Shaun Ewing Apr 02, 1929 00:00
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US-1707265-A // Means for testing lever keys // Hansen Arnold A. // American Telephone & Telegraph
PDF File 1707997.pdf 516 kB Shaun Ewing Apr 09, 1929 00:00
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US-1707997-A // Telegraph system // Shanck Roy B. // American Telephone & Telegraph
PDF File 1708027.pdf 322 kB Shaun Ewing Apr 09, 1929 00:00
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US-1708027-A // Control device for vacuum tubes // Ohl Russell S. // American Telephone & Telegraph
PDF File 1708038.pdf 341 kB Shaun Ewing Apr 09, 1929 00:00
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US-1708038-A // Low-loss insulator // Wilson Leon T. // American Telephone & Telegraph
PDF File 1708974.pdf 330 kB Shaun Ewing Apr 16, 1929 00:00
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US-1708974-A // Submarine-cable telegraphy // Parker Ralzemond D. ; Overton Warner L. // American Telephone & Telegraph
PDF File 1709009.pdf 368 kB Shaun Ewing Apr 16, 1929 00:00
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US-1709009-A // Multiple-channel radioreceiver // Espenschied Lloyd ; Martin De Loss K. // American Telephone & Telegraph
PDF File 1709037.pdf 773 kB Shaun Ewing Apr 16, 1929 00:00
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US-1709037-A // Distortion compensator // Pero Sallie E. // American Telephone & Telegraph
PDF File 1709900.pdf 645 kB Shaun Ewing Apr 23, 1929 00:00
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US-1709900-A // Telephone system // Dietze Eginhard // American Telephone & Telegraph
PDF File 1709901.pdf 930 kB Shaun Ewing Apr 23, 1929 00:00
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US-1709901-A // Secret-signaling system // Espenschied Lloyd ; Gillett Glenn D. // American Telephone & Telegraph
PDF File 1709926.pdf 369 kB Shaun Ewing Apr 23, 1929 00:00
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US-1709926-A // Apparatus and method for transmitting pictures // Weaver Allan // American Telephone & Telegraph
PDF File 1710756.pdf 540 kB Shaun Ewing Apr 30, 1929 00:00
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US-1710756-A // Reduction of attenuation due to the conductance losses in cross arms and insulator pins // Wilson Leon T. // American Telephone & Telegraph
PDF File 1710786.pdf 579 kB Shaun Ewing Apr 30, 1929 00:00
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US-1710786-A // Method and means for producing insulating sleeves // Pike Vernon B. ; John Everett St. // American Telephone & Telegraph
PDF File 1710787.pdf 731 kB Shaun Ewing Apr 30, 1929 00:00
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US-1710787-A // Method and means for producing insulating sleeves // Pike Vernon Bender ; John Everett St. // American Telephone & Telegraph
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