Name Size Creator Creation Date Labels Comment  
PDF File 2542182.pdf 717 kB Shaun Ewing Feb 20, 1951 00:00
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US-2542182-A // Combined radar and communication system // Crump Elmo E. // Bell Telephone Labor Inc
PDF File 2541935.pdf 562 kB Shaun Ewing Feb 13, 1951 00:00
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US-2541935-A // Battery charging apparatus // Potter James A. // Bell Telephone Labor Inc
PDF File 2541932.pdf 2.33 MB Shaun Ewing Feb 13, 1951 00:00
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US-2541932-A // Multiplex speech interpolation system // Melhose Alfred E. // Bell Telephone Labor Inc
PDF File 2541925.pdf 580 kB Shaun Ewing Feb 13, 1951 00:00
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US-2541925-A // Electrical space resonator having a high ratio between quality factor and volume // Kinzer John P. // Bell Telephone Labor Inc
PDF File 2541923.pdf 1.82 MB Shaun Ewing Feb 13, 1951 00:00
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US-2541923-A // Molding apparatus // Huxham Trevor S. // Bell Telephone Labor Inc
PDF File 2541910.pdf 469 kB Shaun Ewing Feb 13, 1951 00:00
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US-2541910-A // Directional coupler // Bangert John T. ; Rosen Sidney // Bell Telephone Labor Inc
PDF File 2541378.pdf 452 kB Shaun Ewing Feb 13, 1951 00:00
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US-2541378-A // Rectangular wave generator control // Nyquist Harry // Bell Telephone Labor Inc
PDF File 2541375.pdf 665 kB Shaun Ewing Feb 13, 1951 00:00
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US-2541375-A // Wave filter // Mumford William W. // Bell Telephone Labor Inc
PDF File 2541348.pdf 1.49 MB Shaun Ewing Feb 13, 1951 00:00
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US-2541348-A // Time division multiplex telephone system // Espenschied Lloyd // Bell Telephone Labor Inc
PDF File 2541324.pdf 863 kB Shaun Ewing Feb 13, 1951 00:00
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US-2541324-A // Motion translating mechanism // Baxter Howard A. ; Lewis Willard D. // Bell Telephone Labor Inc
PDF File 2541322.pdf 1.66 MB Shaun Ewing Feb 13, 1951 00:00
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US-2541322-A // Control of impedance of semiconductor amplifier circuits // Barney Harold L. // Bell Telephone Labor Inc
PDF File 2541320.pdf 619 kB Shaun Ewing Feb 13, 1951 00:00
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US-2541320-A // Multifrequency generator // Bachelet Albert E. // Bell Telephone Labor Inc
PDF File 2541294.pdf 308 kB Shaun Ewing Feb 13, 1951 00:00
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US-2541294-A // Locking electrical connector // Ronci Victor L. // Bell Telephone Labor Inc
PDF File 2541276.pdf 1.28 MB Shaun Ewing Feb 13, 1951 00:00
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US-2541276-A // Differential control circuit // Oliver Bernard M. // Bell Telephone Labor Inc
PDF File 2541259.pdf 724 kB Shaun Ewing Feb 13, 1951 00:00
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US-2541259-A // Automatic frequency control system // Maggio John B. // Bell Telephone Labor Inc
PDF File 2541195.pdf 383 kB Shaun Ewing Feb 13, 1951 00:00
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US-2541195-A // Resonator with multiple electrodes // Bowen Arnold E. // Bell Telephone Labor Inc
PDF File 2540839.pdf 1.55 MB Shaun Ewing Feb 06, 1951 00:00
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US-2540839-A // Wave guide system // Southworth George C. // Bell Telephone Labor Inc
PDF File 2540835.pdf 755 kB Shaun Ewing Feb 06, 1951 00:00
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US-2540835-A // Cathode-ray device // Anderson Alva Eugene // Bell Telephone Labor Inc
PDF File 2540834.pdf 813 kB Shaun Ewing Feb 06, 1951 00:00
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US-2540834-A // Electron discharge device // Sears Raymond W. // Bell Telephone Labor Inc
PDF File 2540498.pdf 479 kB Shaun Ewing Feb 06, 1951 00:00
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US-2540498-A // Microphone damping system having rear openings // Tallman Samuel C. // Bell Telephone Labor Inc
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