Name Size Creator Creation Date Labels Comment  
PDF File 2572216.pdf 846 kB Shaun Ewing Oct 23, 1951 00:00
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US-2572216-A // Signal receiving system // Taylor Edmund R. // Bell Telephone Labor Inc
PDF File 2572210.pdf 728 kB Shaun Ewing Oct 23, 1951 00:00
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US-2572210-A // Current supply apparatus // Spencer Harry H. // Bell Telephone Labor Inc
PDF File 2572132.pdf 9.25 MB Shaun Ewing Oct 23, 1951 00:00
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US-2572132-A // Transcribing and summarizing system // Giroud Henry A. ; Irwin Gordon C. ; Kille Lindley A. ; Retallack John B. ; Riggs George ; Strickler Walter B. // Bell Telephone Labor Inc
PDF File 2572104.pdf 1.36 MB Shaun Ewing Oct 23, 1951 00:00
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US-2572104-A // Private branch exchange telephone system // Bowne Langford J. // Bell Telephone Labor Inc
PDF File 2571800.pdf 893 kB Shaun Ewing Oct 16, 1951 00:00
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US-2571800-A // Signal transmitter // Vroom Edward // Bell Telephone Labor Inc
PDF File 2571780.pdf 401 kB Shaun Ewing Oct 16, 1951 00:00
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US-2571780-A // Damping means // Stoller Marian M. // Bell Telephone Labor Inc
PDF File 2571680.pdf 1.08 MB Shaun Ewing Oct 16, 1951 00:00
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US-2571680-A // Pulse code modulation system employing code substitution // Carbrey Robert L. // Bell Telephone Labor Inc
PDF File 2571167.pdf 842 kB Shaun Ewing Oct 16, 1951 00:00
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US-2571167-A // Masking device for crystals // Ruggles David M. ; Jr. Arthur W. Warner, // Bell Telephone Labor Inc
PDF File 2570978.pdf 946 kB Shaun Ewing Oct 09, 1951 00:00
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US-2570978-A // Semiconductor translating device // Pfann William G. // Bell Telephone Labor Inc
PDF File 2570971.pdf 1.90 MB Shaun Ewing Oct 09, 1951 00:00
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US-2570971-A // Vertical line number translator // Myers Oscar // Bell Telephone Labor Inc
PDF File 2570940.pdf 443 kB Shaun Ewing Oct 09, 1951 00:00
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US-2570940-A // Key sequence indicating keyset // Goff Harold W. // Bell Telephone Labor Inc
PDF File 2570912.pdf 503 kB Shaun Ewing Oct 09, 1951 00:00
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US-2570912-A // Method and means for locating nonlinearities in inaccessible cables // Bishop Walter M. // Bell Telephone Labor Inc
PDF File 2570505.pdf 800 kB Shaun Ewing Oct 09, 1951 00:00
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US-2570505-A // Automatic system for checking receipt of telegraph messages in numerical order // Watson Edward F. // Bell Telephone Labor Inc
PDF File 2570305.pdf 1.84 MB Shaun Ewing Oct 09, 1951 00:00
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US-2570305-A // Electric wave transmission // Barney Harold L. // Bell Telephone Labor Inc
PDF File 2570225.pdf 597 kB Shaun Ewing Oct 09, 1951 00:00
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US-2570225-A // Series electronic switch // Felker Jean H. // Bell Telephone Labor Inc
PDF File 2569478.pdf 6.44 MB Shaun Ewing Oct 02, 1951 00:00
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US-2569478-A // Telegraph storage system // Locke George A. // Bell Telephone Labor Inc
PDF File 2569443.pdf 2.54 MB Shaun Ewing Oct 02, 1951 00:00
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US-2569443-A // Telegraph storage system // Bacon Walter M. // Bell Telephone Labor Inc
PDF File 2569347.pdf 1.79 MB Shaun Ewing Sept 25, 1951 00:00
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US-2569347-A // Circuit element utilizing semiconductive material // Shockley William // Bell Telephone Labor Inc
PDF File 2568823.pdf 874 kB Shaun Ewing Sept 25, 1951 00:00
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US-2568823-A // Loud-speaking telephone set // Potter Ralph K. // Bell Telephone Labor Inc
PDF File 2568804.pdf 971 kB Shaun Ewing Sept 25, 1951 00:00
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US-2568804-A // Automatic telephone system auxiliary line finder arrangement // Hall Oliver C. // Bell Telephone Labor Inc
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