Name Size Creator Creation Date Labels Comment  
PDF File 2135610.pdf 281 kB Shaun Ewing Nov 08, 1938 00:00
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US-2135610-A // Horn // Wente Edward C. // Bell Telephone Labor Inc
PDF File 2135609.pdf 329 kB Shaun Ewing Nov 08, 1938 00:00
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US-2135609-A // Loaded transmission line // Tassel Earl Kenneth Van // Bell Telephone Labor Inc
PDF File 2135596.pdf 640 kB Shaun Ewing Nov 08, 1938 00:00
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US-2135596-A // Relay circuit // Nyquist Harry // Bell Telephone Labor Inc
PDF File 2135581.pdf 1.22 MB Shaun Ewing Nov 08, 1938 00:00
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US-2135581-A // Synchronous receiving system // Knoop William A. // Bell Telephone Laboratries Inc
PDF File 2135566.pdf 969 kB Shaun Ewing Nov 08, 1938 00:00
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US-2135566-A // Gain control circuit // Dixon John T. // Bell Telephone Labor Inc
PDF File 2135562.pdf 689 kB Shaun Ewing Nov 08, 1938 00:00
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US-2135562-A // Thermionic amplifier // Cousins Van M. // Bell Telephone Labor Inc
PDF File 2134718.pdf 794 kB Shaun Ewing Nov 01, 1938 00:00
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US-2134718-A // Electron discharge apparatus // Knoop William A. // Bell Telephone Labor Inc
PDF File 2133832.pdf 737 kB Shaun Ewing Oct 18, 1938 00:00
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US-2133832-A // System for compensating for differences in potential // Pullis George A. // Bell Telephone Labor Inc
PDF File 2133831.pdf 455 kB Shaun Ewing Oct 18, 1938 00:00
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US-2133831-A // Lubricating device // Pritchard William T. // Bell Telephone Labor Inc
PDF File 2133815.pdf 241 kB Shaun Ewing Oct 18, 1938 00:00
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US-2133815-A // Phonograph reproducer // Harrison Henry C. // Bell Telephone Labor Inc
PDF File 2133814.pdf 844 kB Shaun Ewing Oct 18, 1938 00:00
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US-2133814-A // Telephone system // Halligan Clair W. // Bell Telephone Labor Inc
PDF File 2133806.pdf 527 kB Shaun Ewing Oct 18, 1938 00:00
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US-2133806-A // Radio communication system // Bruce Edmond // Bell Telephone Labor Inc
PDF File 2133794.pdf 450 kB Shaun Ewing Oct 18, 1938 00:00
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US-2133794-A // Clutch mechanism // Barber Charles C. // Bell Telephone Labor Inc
PDF File 2133475.pdf 1.22 MB Shaun Ewing Oct 18, 1938 00:00
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US-2133475-A // Call transmitter // Richard Charles D. // Bell Telephone Labor Inc
PDF File 2133456.pdf 1.18 MB Shaun Ewing Oct 18, 1938 00:00
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US-2133456-A // Regenerative telegraph repeater // Kinkead Fullerton S. // Bell Telephone Labor Inc
PDF File 2133448.pdf 439 kB Shaun Ewing Oct 18, 1938 00:00
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US-2133448-A // Joint for electrical conductors // Harley Joseph J. // Bell Telephone Labor Inc
PDF File 2133434.pdf 739 kB Shaun Ewing Oct 18, 1938 00:00
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US-2133434-A // Electric discharge device // Depew Charles ; Roncl Victor L. // Bell Telephone Labor Inc
PDF File 2133429.pdf 919 kB Shaun Ewing Oct 18, 1938 00:00
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US-2133429-A // Gain control circuit // Cox Leslie R. ; Terry Donald M. // Bell Telephone Labor Inc
PDF File 2132857.pdf 940 kB Shaun Ewing Oct 11, 1938 00:00
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US-2132857-A // Telephone system // Lang Albert G. ; Neely Thomas H. // Bell Telephone Labor Inc
PDF File 2132241.pdf 1.31 MB Shaun Ewing Oct 04, 1938 00:00
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US-2132241-A // Telephone system // Hovland Henry // Bell Telephone Labor Inc
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