Name Size Creator Creation Date Labels Comment  
PDF File 2629021.pdf 504 kB Shaun Ewing Feb 17, 1953 00:00
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US-2629021-A // Coordinate switching and lock-out circuit in interpolated speech receiving system // Robertson Donald D. ; Wurmser Alphons V. // Bell Telephone Labor Inc
PDF File 2629020.pdf 311 kB Shaun Ewing Feb 17, 1953 00:00
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US-2629020-A // Coordinate selecting and lock-out circuit for interpolated speech transmission // Robertson Donald D. // Bell Telephone Labor Inc
PDF File 2629017.pdf 3.40 MB Shaun Ewing Feb 17, 1953 00:00
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US-2629017-A // Speech transmission system // Dahlbom Carl A. ; Weaver Allan // Bell Telephone Labor Inc
PDF File 2629016.pdf 15.95 MB Shaun Ewing Feb 17, 1953 00:00
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US-2629016-A // Automatic toll-ticketing system // Gooderham John W. // Bell Telephone Labor Inc
PDF File 2629011.pdf 792 kB Shaun Ewing Feb 17, 1953 00:00
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US-2629011-A // Television system having reduced transmission bandwidth // Graham Robert E. // 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 2629006.pdf 1.11 MB Shaun Ewing Feb 17, 1953 00:00
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US-2629006-A // Amplifier circuit having a reactive load // Oliver Bernard M. // Bell Telephone Labor Inc
PDF File 2628936.pdf 831 kB Shaun Ewing Feb 17, 1953 00:00
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US-2628936-A // Method of forming a point at the end of a wire // Albano Vincent J. // Bell Telephone Labor Inc
PDF File 2628550.pdf 553 kB Shaun Ewing Feb 17, 1953 00:00
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US-2628550-A // Ventilator for telephone booths // King John H. // Bell Telephone Labor Inc
PDF File 2628340.pdf 1.42 MB Shaun Ewing Feb 10, 1953 00:00
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US-2628340-A // Voltage and current regulation // Potter James A. // Bell Telephone Labor Inc
PDF File 2628283.pdf 1.56 MB Shaun Ewing Feb 10, 1953 00:00
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US-2628283-A // Semiautomatic telephone switching system arranged for selective alternating current or direct current key pulsing // Mckim Burton // Bell Telephone Labor Inc
PDF File 2627780.pdf 911 kB Shaun Ewing Feb 10, 1953 00:00
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US-2627780-A // Optical projecting comparator // Waddell John H. // Bell Telephone Labor Inc
PDF File 2627769.pdf 491 kB Shaun Ewing Feb 10, 1953 00:00
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US-2627769-A // Swaging pliers for electrical connections // Anderson Fred A. ; Blattner David G. ; Miller Victor F. // Bell Telephone Labor Inc
PDF File 2627575.pdf 673 kB Shaun Ewing Feb 03, 1953 00:00
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US-2627575-A // Semiconductor translating device // Meacham Larned A. ; Michaels Simon Eugene // Bell Telephone Labor Inc
PDF File 2627574.pdf 1.67 MB Shaun Ewing Feb 03, 1953 00:00
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US-2627574-A // Radio repeater having a pulse regenerator // Feldman Carl B. H. // Bell Telephone Labor Inc
PDF File 2627550.pdf 1.05 MB Shaun Ewing Feb 03, 1953 00:00
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US-2627550-A // Adjustable impedance transformer // Rose Charles F. P. // Bell Telephone Labor Inc
PDF File 2627541.pdf 1.11 MB Shaun Ewing Feb 03, 1953 00:00
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US-2627541-A // Determination of pitch frequency of complex wave // Miller Ralph L. // Bell Telephone Labor Inc
PDF File 2627053.pdf 1.80 MB Shaun Ewing Jan 27, 1953 00:00
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US-2627053-A // Cold cathode gaseous discharge devices and circuits therefor // Townsend Mark A. // Bell Telephone Labor Inc
PDF File 2627039.pdf 1.23 MB Shaun Ewing Jan 27, 1953 00:00
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US-2627039-A // Gating circuits // Jr. Walter H. Macwilliams, // Bell Telephone Labor Inc
PDF File 2627027.pdf 480 kB Shaun Ewing Jan 27, 1953 00:00
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US-2627027-A // Nonreflective radio refractor // Kock Winston E. // Bell Telephone Labor Inc
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