Name Size Creator Creation Date Labels Comment  
PDF File 2594505.pdf 3.02 MB Shaun Ewing Apr 29, 1952 00:00
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US-2594505-A // Calling line identification and registering system // Seudder Frederick J. ; Vroom Edward // Bell Telephone Labor Inc
PDF File 2616625.pdf 2.99 MB Shaun Ewing Nov 04, 1952 00:00
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US-2616625-A // Electrical computing system // Griest Raymond H. ; Wooldridge Dean E. // Bell Telephone Labor Inc
PDF File 2556958.pdf 2.97 MB Shaun Ewing Jun 12, 1951 00:00
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US-2556958-A // Translator circuit // Branson David E. ; Davey James R. ; Knandel George J. ; Locke George A. ; Vanderlippe Richard A. // Bell Telephone Labor Inc
PDF File 2727092.pdf 2.93 MB Shaun Ewing Dec 13, 1955 00:00
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US-2727092-A // Transverter // Cahill Harold D. // Bell Telephone Labor Inc
PDF File 2572804.pdf 2.93 MB Shaun Ewing Oct 23, 1951 00:00
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US-2572804-A // Automatic accounting device // Flint Erlon W. ; Jr. Amos E. Joel, // Bell Telephone Labor Inc
PDF File 2550585.pdf 2.88 MB Shaun Ewing Apr 24, 1951 00:00
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US-2550585-A // Telephone identification circuit // Murphy Richard P. // Bell Telephone Labor Inc
PDF File 2575363.pdf 2.87 MB Shaun Ewing Nov 20, 1951 00:00
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US-2575363-A // Harmonic crystal oscillator // Simons Burton H. // Bell Telephone Labor Inc
PDF File 2558187.pdf 2.86 MB Shaun Ewing Jun 26, 1951 00:00
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US-2558187-A // Selective signaling generator in which coded information is recorded on a magnetizable medium // Marrison Warren A. // Bell Telephone Labor Inc
PDF File 2680162.pdf 2.79 MB Shaun Ewing Jun 01, 1954 00:00
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US-2680162-A // Automatic line testing and switching circuit // Brehm Harold B. ; Kinzer John P. ; Smith Aubrey A. ; Wilson Ira G. // Bell Telephone Labor Inc
PDF File 2657266.pdf 2.78 MB Shaun Ewing Oct 27, 1953 00:00
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US-2657266-A // Automatic multichannel selection // Hoth Daniel F. ; Soffel Robert O. // Bell Telephone Labor Inc
PDF File 2538266.pdf 2.76 MB Shaun Ewing Jan 16, 1951 00:00
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US-2538266-A // Communication system employing pulse code modulation // Pierce John R. // Bell Telephone Labor Inc
PDF File 2591579.pdf 2.73 MB Shaun Ewing Apr 01, 1952 00:00
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US-2591579-A // Permanent-signal indicating system // Michal Joseph // Bell Telephone Labor Inc
PDF File 2636159.pdf 2.72 MB Shaun Ewing Apr 21, 1953 00:00
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US-2636159-A // Pulse code modulation communication system // Carbrey Robert L. // Bell Telephone Labor Inc
PDF File 2580757.pdf 2.70 MB Shaun Ewing Jan 01, 1952 00:00
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US-2580757-A // Alarm sending circuit // Germanton Charles E. // Bell Telephone Labor Inc
PDF File 2622127.pdf 2.69 MB Shaun Ewing Dec 16, 1952 00:00
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US-2622127-A // Indicating apparatus // Alsberg Dietrich A. ; Muhlsteff Robert P. // Bell Telephone Labor Inc
PDF File 2672512.pdf 2.67 MB Shaun Ewing Mar 16, 1954 00:00
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US-2672512-A // System for analyzing and synthesizing speech // Mathes Robert C. // Bell Telephone Labor Inc
PDF File 2608616.pdf 2.67 MB Shaun Ewing Aug 26, 1952 00:00
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US-2608616-A // Facsimile system // Pfleger Kenneth W. // Bell Telephone Labor Inc
PDF File 2679551.pdf 2.66 MB Shaun Ewing May 25, 1954 00:00
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US-2679551-A // Capacitative commutator // Newby Neal D. // Bell Telephone Labor Inc
PDF File 2672604.pdf 2.60 MB Shaun Ewing Mar 16, 1954 00:00
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US-2672604-A // Telephone ringing power plant // Mills John K. ; Ross Walter S. // Bell Telephone Labor Inc
PDF File 2657268.pdf 2.58 MB Shaun Ewing Oct 27, 1953 00:00
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US-2657268-A // System for automatically ticketing telephone calls // Retallack John B. // Bell Telephone Labor Inc
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