Name Size Creator Creation Date Labels Comment  
PDF File 2323657.pdf 907 kB Shaun Ewing Jul 06, 1943 00:00
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US-2323657-A // Coin disposal unit // Henning Harley A. // Bell Telephone Labor Inc
PDF File 2267450.pdf 907 kB Shaun Ewing Dec 23, 1941 00:00
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US-2267450-A // Electron discharge device // Ekstrand Sture O. ; Ronci Victor L. // Bell Telephone Labor Inc
PDF File 2229108.pdf 906 kB Shaun Ewing Jan 21, 1941 00:00
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US-2229108-A // Switching of spare repeater sections // Maggio John B. ; Tassel Earl K. Van ; Wilson Ira G. // Bell Telephone Labor Inc
PDF File 2227580.pdf 905 kB Shaun Ewing Jan 07, 1941 00:00
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US-2227580-A // Acoustic device // Harry William R. ; Marshall Robert N. // Bell Telephone Labor Inc
PDF File 2299854.pdf 905 kB Shaun Ewing Oct 27, 1942 00:00
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US-2299854-A // Telephone coin collector // Smith Albert K. ; Smythe Edwin H. // Bell Telephone Labor Inc
PDF File 2283366.pdf 904 kB Shaun Ewing May 19, 1942 00:00
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US-2283366-A // Relay // Hickman Clarence N. ; Lakatos Emory // Bell Telephone Labor Inc
PDF File 2341011.pdf 903 kB Shaun Ewing Feb 08, 1944 00:00
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US-2341011-A // Ticket cutter // Bascom Henry M. ; Rhodes William A. // Bell Telephone Labor Inc
PDF File 2268984.pdf 901 kB Shaun Ewing Jan 06, 1942 00:00
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US-2268984-A // Busy line recorder // Hersey Ralph E. // Bell Telephone Labor Inc
PDF File 2259317.pdf 901 kB Shaun Ewing Oct 14, 1941 00:00
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US-2259317-A // Piezoelectric crystal apparatus // Mason Warren P. // Bell Telephone Labor Inc
PDF File 2267286.pdf 900 kB Shaun Ewing Dec 23, 1941 00:00
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US-2267286-A // Negative feedback amplifier // Meyers Stanley T. // Bell Telephone Labor Inc
PDF File 2236172.pdf 900 kB Shaun Ewing Mar 25, 1941 00:00
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US-2236172-A // Electro-optical system // Gray Frank // Bell Telephone Labor Inc
PDF File 2309953.pdf 899 kB Shaun Ewing Feb 02, 1943 00:00
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US-2309953-A // Electric switch // Harrison Henry C. // Bell Telephone Labor Inc
PDF File 2250172.pdf 898 kB Shaun Ewing Jul 22, 1941 00:00
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US-2250172-A // Electrical wave amplification // Wilson Ira G. // Bell Telephone Labor Inc
PDF File 2298695.pdf 898 kB Shaun Ewing Oct 13, 1942 00:00
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US-2298695-A // Selecting system // Hall Nathan I. // Bell Telephone Labor Inc
PDF File 2281062.pdf 897 kB Shaun Ewing Apr 28, 1942 00:00
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US-2281062-A // Telephone system // Brubaker James W. // Bell Telephone Labor Inc
PDF File 2231962.pdf 897 kB Shaun Ewing Feb 18, 1941 00:00
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US-2231962-A // Means for suspending aerial cables // John Everett St. // Bell Telephone Labor Inc
PDF File 2288695.pdf 896 kB Shaun Ewing Jul 07, 1942 00:00
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US-2288695-A // Electrical insulated conductor // Fulier Calvin S. // Bell Telephone Labor Inc
PDF File 2276037.pdf 896 kB Shaun Ewing Mar 10, 1942 00:00
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US-2276037-A // Telephone system // Hecht George ; Lundstrom Alexis A. // Bell Telephone Labor Inc
PDF File 2235010.pdf 895 kB Shaun Ewing Mar 18, 1941 00:00
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US-2235010-A // Ultra-short wave transmitting and receiving system // Chaffee Joseph G. // Bell Telephone Labor Inc
PDF File 2361719.pdf 895 kB Shaun Ewing Oct 31, 1944 00:00
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US-2361719-A // Electron discharge device and elements thereof // Teal Gordon K. // Bell Telephone Labor Inc
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