Name Size Creator Creation Date Labels Comment  
PDF File 2106793.pdf 610 kB Shaun Ewing Feb 01, 1938 00:00
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US-2106793-A // Filter including space discharge device // Burton Everett T. // Bell Telephone Labor Inc
PDF File 1912442.pdf 610 kB Shaun Ewing Jun 06, 1933 00:00
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US-1912442-A // Loaded cable // Gilbert John J. // Bell Telephone Labor Inc
PDF File 1854830.pdf 609 kB Shaun Ewing Apr 19, 1932 00:00
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US-1854830-A // Acoustic device // Flanders Paul B. // Bell Telephone Labor Inc
PDF File 2154623.pdf 609 kB Shaun Ewing Apr 18, 1939 00:00
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US-2154623-A // Regenerative telegraph repeater // Kinkead Fullerton S. // Bell Telephone Labor Inc
PDF File 1941074.pdf 608 kB Shaun Ewing Dec 26, 1933 00:00
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US-1941074-A // Electric discharge device // Bond Donald S. ; Cadmus Kenneth S. // Bell Telephone Labor Inc
PDF File 2014528.pdf 608 kB Shaun Ewing Sept 17, 1935 00:00
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US-2014528-A // Sound recording and reproducing system // Keller Arthur C. // Bell Telephone Labor Inc
PDF File 1844424.pdf 607 kB Shaun Ewing Feb 09, 1932 00:00
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US-1844424-A // Long distance telephone transmission // Jr. Arthur W. Horton, // Bell Telephone Labor Inc
PDF File 1884845.pdf 607 kB Shaun Ewing Oct 25, 1932 00:00
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US-1884845-A // Magnetic amplifier // Peterson Eugene // Bell Telephone Labor Inc
PDF File 2088292.pdf 606 kB Shaun Ewing Jul 27, 1937 00:00
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US-2088292-A // Electrical communication system // Eglin James M. // Bell Telephone Labor Inc
PDF File 2117752.pdf 606 kB Shaun Ewing May 17, 1938 00:00
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US-2117752-A // Harmonic producer // Wrathall Lelshman R. // Bell Telephone Labor Inc
PDF File 1978188.pdf 606 kB Shaun Ewing Oct 23, 1934 00:00
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US-1978188-A // Piezoelectric crystal apparatus // Ciccolella David F. // Bell Telephone Labor Inc
PDF File 1788526.pdf 605 kB Shaun Ewing Jan 13, 1931 00:00
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US-1788526-A // Artificial line // Johnson Kenneth S. // Bell Telephone Labor Inc
PDF File 1950123.pdf 605 kB Shaun Ewing Mar 06, 1934 00:00
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US-1950123-A // Automatic selection of receiving channels // Ohl Russell S. // Bell Telephone Labor Inc
PDF File 1840116.pdf 605 kB Shaun Ewing Jan 05, 1932 00:00
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US-1840116-A // Switch cleaning device // Linton Grant ; Townsend John R. // Bell Telephone Labor Inc
PDF File 1907132.pdf 605 kB Shaun Ewing May 02, 1933 00:00
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US-1907132-A // Constant frequency system // Thurston George M. // Bell Telephone Labor Inc
PDF File 1857794.pdf 605 kB Shaun Ewing May 10, 1932 00:00
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US-1857794-A // Wave energy translating diaphragm and method of mounting it // Smythe Edwin H. // Bell Telephone Labor Inc
PDF File 1954943.pdf 604 kB Shaun Ewing Apr 17, 1934 00:00
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US-1954943-A // Wave transmission network // Norton Edward L. // Bell Telephone Labor Inc
PDF File 2190295.pdf 604 kB Shaun Ewing Feb 13, 1940 00:00
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US-2190295-A // Switching device // Miller Robert A. ; Rubly Harry C. // Bell Telephone Labor Inc
PDF File 1893031.pdf 603 kB Shaun Ewing Jan 03, 1933 00:00
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US-1893031-A // Control circuits for space discharge devices // Llewellyn Frederick B. // Bell Telephone Labor Inc
PDF File 1816613.pdf 603 kB Shaun Ewing Jul 28, 1931 00:00
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US-1816613-A // Telephone system // Powell Albert C. // Bell Telephone Labor Inc
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