Name Size Creator Creation Date Labels Comment  
PDF File 1989618.pdf 1.22 MB Shaun Ewing Jan 29, 1935 00:00
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US-1989618-A // Electrooptical transmission // Ives Herbert E. // Bell Telephone Labor Inc
PDF File 2220883.pdf 1.22 MB Shaun Ewing Nov 12, 1940 00:00
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US-2220883-A // Circuit controller // Gerger Uriah S. ; Curtis Austen M. // 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 1840015.pdf 1.22 MB Shaun Ewing Jan 05, 1932 00:00
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US-1840015-A // Transmission control circuit // Bjornson Bjorn G. // Bell Telephone Labor Inc
PDF File 2126265.pdf 1.21 MB Shaun Ewing Aug 09, 1938 00:00
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US-2126265-A // Phasing and synchronizing of signaling apparatus // Knoop William A. // Bell Telephone Labor Inc
PDF File 1836810.pdf 1.21 MB Shaun Ewing Dec 15, 1931 00:00
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US-1836810-A // Distortion correction in transmission systems // Mason Warren Perry // Bell Telephone Labor Inc
PDF File 2019638.pdf 1.21 MB Shaun Ewing Nov 05, 1935 00:00
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US-2019638-A // Clutch and brake mechanism // Stoller Hugh M. ; Morton Edmund R. // Bell Telephone Labor Inc
PDF File 2043345.pdf 1.21 MB Shaun Ewing Jun 09, 1936 00:00
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US-2043345-A // Wave transmission network // Bobis Stephen // Bell Telephone Labor Inc
PDF File 2049183.pdf 1.21 MB Shaun Ewing Jul 28, 1936 00:00
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US-2049183-A // Telephone system // Ulrich Horace W. // Bell Telephone Labor Inc
PDF File 1852584.pdf 1.21 MB Shaun Ewing Apr 05, 1932 00:00
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US-1852584-A // Transmission control // Mathes Robert C. // Bell Telephone Labor Inc
PDF File 2118919.pdf 1.21 MB Shaun Ewing May 31, 1938 00:00
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US-2118919-A // Testing arrangement for electron discharge devices and methods of operating same // Gannett Danforth K. // Bell Telephone Labor Inc
PDF File 2066325.pdf 1.20 MB Shaun Ewing Jan 05, 1937 00:00
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US-2066325-A // Transmission control in two-way signaling system // Bjornson Bjorn G. ; Bryant Newton W. // Bell Telephone Labor Inc
PDF File 2198684.pdf 1.20 MB Shaun Ewing Apr 30, 1940 00:00
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US-2198684-A // Wave filter // Sykes Roger A. // Bell Telephone Labor Inc
PDF File 1809124.pdf 1.20 MB Shaun Ewing Jun 09, 1931 00:00
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US-1809124-A // Telephone exchange system // Hovland Henry // Bell Telephone Labor Inc
PDF File 2045991.pdf 1.20 MB Shaun Ewing Jun 30, 1936 00:00
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US-2045991-A // Wave filter // Mason Warren P. // Bell Telephone Labor Inc
PDF File 2107756.pdf 1.20 MB Shaun Ewing Feb 08, 1938 00:00
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US-2107756-A // Privacy system // Kendall Burton W. ; Mitchell Doren // Bell Telephone Labor Inc
PDF File 1901403.pdf 1.20 MB Shaun Ewing Mar 14, 1933 00:00
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US-1901403-A // Telephone system // Murphy Paul B. // Bell Telephone Labor Inc
PDF File 1862554.pdf 1.20 MB Shaun Ewing Jun 14, 1932 00:00
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US-1862554-A // Acoustic device // Smythe Edwin H. // Bell Telephone Labor Inc
PDF File 1860936.pdf 1.20 MB Shaun Ewing May 31, 1932 00:00
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US-1860936-A // Electrical control system // Marrison Warren A. ; Horton Joseph W. // Bell Telephone Labor Inc
PDF File 1917035.pdf 1.20 MB Shaun Ewing Jul 04, 1933 00:00
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US-1917035-A // Circuit for reducing interference // Jacobs Oliver B. // Bell Telephone Labor Inc
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