Name Size Creator Creation Date Labels Comment  
PDF File 2458566.pdf 1.02 MB Shaun Ewing Jan 11, 1949 00:00
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US-2458566-A // Distortion reduction in channel switching // Cox Leslie R. ; Huber George H. // Bell Telephone Labor Inc
PDF File 2458556.pdf 737 kB Shaun Ewing Jan 11, 1949 00:00
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US-2458556-A // Coupled cavity resonator and wave guide apparatus // Bowen Arnold E. // Bell Telephone Labor Inc
PDF File 2458553.pdf 701 kB Shaun Ewing Jan 11, 1949 00:00
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US-2458553-A // Electronic computing device // Boghosian William H. ; Och Henry G. // Bell Telephone Labor Inc
PDF File 2458552.pdf 542 kB Shaun Ewing Jan 11, 1949 00:00
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US-2458552-A // Method of making electrical contacting elements // Blattner David G. // Bell Telephone Labor Inc
PDF File 2458550.pdf 1.76 MB Shaun Ewing Jan 11, 1949 00:00
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US-2458550-A // Trainer for enabling the giving of radio instruction // Baulch Ernest L. // Bell Telephone Labor Inc
PDF File 2458181.pdf 653 kB Shaun Ewing Jan 04, 1949 00:00
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US-2458181-A // Speed reduction mechanism // Little John B. ; Munson Wilden A. // Bell Telephone Labor Inc
PDF File 2458175.pdf 702 kB Shaun Ewing Jan 04, 1949 00:00
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US-2458175-A // Directive antenna control system // Kolding Aaron Robert // Bell Telephone Labor Inc
PDF File 2458030.pdf 3.06 MB Shaun Ewing Jan 04, 1949 00:00
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US-2458030-A // Selective signaling apparatus and system // Rea Wilton T. // Bell Telephone Labor Inc
PDF File 2458000.pdf 824 kB Shaun Ewing Jan 04, 1949 00:00
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US-2458000-A // Feedback amplifier or oscillator // Ingram Sydney B. // Bell Telephone Labor Inc
PDF File 2457986.pdf 1.50 MB Shaun Ewing Jan 04, 1949 00:00
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US-2457986-A // Synchronization of time division multiplex communication system // Edson James O. // Bell Telephone Labor Inc
PDF File 2457892.pdf 830 kB Shaun Ewing Jan 04, 1949 00:00
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US-2457892-A // Pulse testing equipment // Hibbard Frank H. // Bell Telephone Labor Inc
PDF File 2457878.pdf 1.03 MB Shaun Ewing Jan 04, 1949 00:00
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US-2457878-A // Solenoid operated switch // Dubuar Arthur S. // Bell Telephone Labor Inc
PDF File 2457601.pdf 510 kB Shaun Ewing Dec 28, 1948 00:00
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US-2457601-A // Wave translating apparatus // Ring Douglas H. // Bell Telephone Labor Inc
PDF File 2457589.pdf 555 kB Shaun Ewing Dec 28, 1948 00:00
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US-2457589-A // Wiper assembly for step-by-step switches // Miller Victor F. // Bell Telephone Labor Inc
PDF File 2457588.pdf 648 kB Shaun Ewing Dec 28, 1948 00:00
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US-2457588-A // Split ring cord guide for step-by-step switches // Miller Victor F. // Bell Telephone Labor Inc
PDF File 2457562.pdf 356 kB Shaun Ewing Dec 28, 1948 00:00
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US-2457562-A // Antenna drive mechanism // Karleen Edward H. // Bell Telephone Labor Inc
PDF File 2457559.pdf 328 kB Shaun Ewing Dec 28, 1948 00:00
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US-2457559-A // Repeater for pulse communication system // Huber George H. // Bell Telephone Labor Inc
PDF File 2457555.pdf 1000 kB Shaun Ewing Dec 28, 1948 00:00
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US-2457555-A // Apparatus for orienting quartz crystals by x-rays // Haworth Francis E. // Bell Telephone Labor Inc
PDF File 2457527.pdf 664 kB Shaun Ewing Dec 28, 1948 00:00
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US-2457527-A // Acoustic device // Bruce Edmond // Bell Telephone Labor Inc
PDF File 2457524.pdf 687 kB Shaun Ewing Dec 28, 1948 00:00
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US-2457524-A // Wave guide repeater // Bowen Arnold E. // Bell Telephone Labor Inc
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