Name Size Creator Creation Date Labels Comment  
PDF File 2279360.pdf 334 kB Shaun Ewing Apr 14, 1942 00:00
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US-2279360-A // Impulse transmitter // Weaver Allan // Bell Telephone Labor Inc
PDF File 2279404.pdf 707 kB Shaun Ewing Apr 14, 1942 00:00
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US-2279404-A // Relay // Lakatos Emory // Bell Telephone Labor Inc
PDF File 2279811.pdf 407 kB Shaun Ewing Apr 14, 1942 00:00
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US-2279811-A // Relay // Baker Clarence I. // Bell Telephone Labor Inc
PDF File 2279821.pdf 612 kB Shaun Ewing Apr 14, 1942 00:00
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US-2279821-A // Secondary electron emissive electrode // Hedberg Carl A. ; Mcnally James O. // Bell Telephone Labor Inc
PDF File 2279822.pdf 1.42 MB Shaun Ewing Apr 14, 1942 00:00
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US-2279822-A // Intercepting trunk // Henry Israel H. ; Korn Franklin A. // Bell Telephone Labor Inc
PDF File 2279826.pdf 214 kB Shaun Ewing Apr 14, 1942 00:00
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US-2279826-A // Electrical condenser // Kater Joseph A. // Bell Telephone Labor Inc
PDF File 2279835.pdf 582 kB Shaun Ewing Apr 14, 1942 00:00
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US-2279835-A // Electron discharge device // Mcrae James W. // Bell Telephone Labor Inc
PDF File 2279872.pdf 796 kB Shaun Ewing Apr 14, 1942 00:00
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US-2279872-A // Diode oscillator // Llewellyn Frederick B. // Bell Telephone Labor Inc
PDF File 2279978.pdf 712 kB Shaun Ewing Apr 14, 1942 00:00
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US-2279978-A // Signaling system // Gannett Danforth K. // Bell Telephone Labor Inc
PDF File 2279979.pdf 299 kB Shaun Ewing Apr 14, 1942 00:00
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US-2279979-A // Cutting tool // Gillich James J. // Bell Telephone Labor Inc
PDF File 2280158.pdf 655 kB Shaun Ewing Apr 21, 1942 00:00
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US-2280158-A // Two-way signal transmission system // Mitehell Doren // Bell Telephone Labor Inc
PDF File 2280200.pdf 455 kB Shaun Ewing Apr 21, 1942 00:00
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US-2280200-A // Concentric conductor transmission line // Smith Phillip H. // Bell Telephone Labor Inc
PDF File 2280257.pdf 346 kB Shaun Ewing Apr 21, 1942 00:00
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US-2280257-A // Resistor device and method of making the same // Pearson Gerald L. // Bell Telephone Labor Inc
PDF File 2280292.pdf 2.14 MB Shaun Ewing Apr 21, 1942 00:00
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US-2280292-A // Teletypewriter switching system // Kinkead Fullerton S. ; Kreeek Joseph A. // Bell Telephone Labor Inc
PDF File 2280293.pdf 1.03 MB Shaun Ewing Apr 21, 1942 00:00
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US-2280293-A // Repeater control // Jr. John G. Kreer, // Bell Telephone Labor Inc
PDF File 2280303.pdf 754 kB Shaun Ewing Apr 21, 1942 00:00
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US-2280303-A // Electron multiplier system // Reynolds Frederick W. // Bell Telephone Labor Inc
PDF File 2280438.pdf 555 kB Shaun Ewing Apr 21, 1942 00:00
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US-2280438-A // Circuit controlling device // Matthews Emil C. // Bell Telephone Labor Inc
PDF File 2280528.pdf 1.00 MB Shaun Ewing Apr 21, 1942 00:00
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US-2280528-A // Electronic switching apparatus // King Archie P. // Bell Telephone Labor Inc
PDF File 2280604.pdf 1.17 MB Shaun Ewing Apr 21, 1942 00:00
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US-2280604-A // Telephone call transmitter // Richard Charles D. // Bell Telephone Labor Inc
PDF File 2280661.pdf 347 kB Shaun Ewing Apr 21, 1942 00:00
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US-2280661-A // Filtering circuits // O'Leary Joseph T. // Bell Telephone Labor Inc
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