Name Size Creator Creation Date Labels Comment  
PDF File 2538495.pdf 972 kB Shaun Ewing Jan 16, 1951 00:00
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US-2538495-A // Metallic container sealing method // Barry Joseph F. // 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
PDF File 2556377.pdf 971 kB Shaun Ewing Jun 12, 1951 00:00
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US-2556377-A // Detecting system for frequency modulated waves // Robertson Sloan D. // Bell Telephone Labor Inc
PDF File 2546840.pdf 970 kB Shaun Ewing Mar 27, 1951 00:00
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US-2546840-A // Wave guide phase shifter // Tyrrell Warren A. // Bell Telephone Labor Inc
PDF File 2642498.pdf 969 kB Shaun Ewing Jun 16, 1953 00:00
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US-2642498-A // Dial telephone system-digit absorbing selector circuit // Riddell George ; Soucy Harold A. // Bell Telephone Labor Inc
PDF File 2703368.pdf 968 kB Shaun Ewing Mar 01, 1955 00:00
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US-2703368-A // Pulse regeneration // Wrathall Leishman R. // Bell Telephone Labor Inc
PDF File 2728051.pdf 968 kB Shaun Ewing Dec 20, 1955 00:00
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US-2728051-A // Impedance transformers // Rose Charles F. P. // Bell Telephone Labor Inc
PDF File 2663795.pdf 966 kB Shaun Ewing Dec 22, 1953 00:00
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US-2663795-A // Electrical wave transforming system // Mohr Milton E. // Bell Telephone Labor Inc
PDF File 2590885.pdf 965 kB Shaun Ewing Apr 01, 1952 00:00
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US-2590885-A // Spaced-pulse impulse sender // Parkinson David B. // Bell Telephone Labor Inc
PDF File 2622213.pdf 965 kB Shaun Ewing Dec 16, 1952 00:00
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US-2622213-A // Transistor circuit for pulse amplifier delay and the like // Harris James R. // Bell Telephone Labor Inc
PDF File 2655646.pdf 964 kB Shaun Ewing Oct 13, 1953 00:00
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US-2655646-A // Supervisory alarm system // Callahan Vincent T. ; Fry Lloyd D. // Bell Telephone Labor Inc
PDF File 2591856.pdf 962 kB Shaun Ewing Apr 08, 1952 00:00
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US-2591856-A // Pulse echo distance indicator // Oliver Bernard M. // Bell Telephone Labor Inc
PDF File 2697269.pdf 960 kB Shaun Ewing Dec 21, 1954 00:00
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US-2697269-A // Method of making semiconductor translating devices // Fuller Calvin S. // Bell Telephone Labor Inc
PDF File 2619549.pdf 960 kB Shaun Ewing Nov 25, 1952 00:00
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US-2619549-A // Toll supervisory operator's telephone circuit // Buchanan Russell B. // Bell Telephone Labor Inc
PDF File 2682585.pdf 960 kB Shaun Ewing Jun 29, 1954 00:00
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US-2682585-A // Electromagnetic relay // Knapp Harry M. ; Jr. Charles F. Spahn, // Bell Telephone Labor Inc
PDF File 2562717.pdf 960 kB Shaun Ewing Jul 31, 1951 00:00
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US-2562717-A // Dialed number recovery circuit // Holden William H. T. // Bell Telephone Labor Inc
PDF File 2629010.pdf 959 kB Shaun Ewing Feb 17, 1953 00:00
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US-2629010-A // Television system having reduced transmission bandwidth // Graham Robert E. // Bell Telephone Labor Inc
PDF File 2678486.pdf 959 kB Shaun Ewing May 18, 1954 00:00
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US-2678486-A // Grid for electron discharge devices // Chick Arthur J. ; Speck Lawrence J. // Bell Telephone Labor Inc
PDF File 2726370.pdf 957 kB Shaun Ewing Dec 06, 1955 00:00
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US-2726370-A // Negative impedance converters employing transistors // Linvill John G. ; Jr. Robert L. Wallace, // Bell Telephone Labor Inc
PDF File 2696529.pdf 957 kB Shaun Ewing Dec 07, 1954 00:00
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US-2696529-A // Voice-operated switching system // Bachelet Albert E. ; Soffel Robert O. // Bell Telephone Labor Inc
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