Name Size Creator Creation Date Labels Comment  
PDF File 2069915.pdf 303 kB Shaun Ewing Feb 09, 1937 00:00
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US-2069915-A // Signaling system // Edwards William Hopple ; Halligan Clair William // American Telephone & Telegraph
PDF File 2143992.pdf 303 kB Shaun Ewing Jan 17, 1939 00:00
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US-2143992-A // Electrical protective system // Maurer Keith Langdon ; Swart Leland Kasson // American Telephone & Telegraph
PDF File 2105592.pdf 303 kB Shaun Ewing Jan 18, 1938 00:00
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US-2105592-A // Educational device // Hathaway Lloyd Albro ; Fay Harry H. // American Telephone & Telegraph
PDF File 2014505.pdf 303 kB Shaun Ewing Sept 17, 1935 00:00
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US-2014505-A // Coin chute // Patche Clinton John // American Telephone & Telegraph
PDF File 1801380.pdf 302 kB Shaun Ewing Apr 21, 1931 00:00
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US-1801380-A // Signaling system // Vernam Gilbert S. // American Telephone & Telegraph
PDF File 2198550.pdf 301 kB Shaun Ewing Apr 23, 1940 00:00
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US-2198550-A // Teletypewriter tape wiper // Mathews Eric Barry // American Telephone & Telegraph
PDF File 1950552.pdf 300 kB Shaun Ewing Mar 13, 1934 00:00
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US-1950552-A // Relay cover // Hansen Arnold A. // American Telephone & Telegraph
PDF File 1903999.pdf 299 kB Shaun Ewing Apr 18, 1933 00:00
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US-1903999-A // Regulating system // Holden William H. T. ; Jutson Robert P. // American Telephone & Telegraph ; Bell Telephone Labor Inc
PDF File 2153087.pdf 295 kB Shaun Ewing Apr 04, 1939 00:00
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US-2153087-A // Mold // Knapp Howard Samuel // American Telephone & Telegraph
PDF File 1977776.pdf 294 kB Shaun Ewing Oct 23, 1934 00:00
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US-1977776-A // Telegraph alarm circuits // Rea Wilton T. // American Telephone & Telegraph
PDF File 1864645.pdf 294 kB Shaun Ewing Jun 28, 1932 00:00
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US-1864645-A // Telephone signaling system // Edwards William H. // American Telephone & Telegraph
PDF File 2134823.pdf 294 kB Shaun Ewing Nov 01, 1938 00:00
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US-2134823-A // Ladder holder // Stephan Charles ; Ott Frank Joseph // American Telephone & Telegraph
PDF File 2048091.pdf 294 kB Shaun Ewing Jul 21, 1936 00:00
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US-2048091-A // Power line carrier system // Affel Herman A. ; Green Estill I. // American Telephone & Telegraph
PDF File 1861524.pdf 292 kB Shaun Ewing Jun 07, 1932 00:00
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US-1861524-A // System for neutralizing crosstalk between signaling circuits // Coolidge Oliver H. // American Telephone & Telegraph
PDF File 1814987.pdf 291 kB Shaun Ewing Jul 14, 1931 00:00
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US-1814987-A // Picture transmitting system // Weaver Allan ; Branson David Ernest // American Telephone & Telegraph
PDF File 1878724.pdf 291 kB Shaun Ewing Sept 20, 1932 00:00
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US-1878724-A // Generating and modulating apparatus // Stevens Walter A. // American Telephone & Telegraph
PDF File 2097578.pdf 291 kB Shaun Ewing Nov 02, 1937 00:00
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US-2097578-A // Apparatus for recording steep wave front voltages of short duration // Swart Leland Kasson ; Bodle David William // American Telephone & Telegraph
PDF File 2032360.pdf 291 kB Shaun Ewing Mar 03, 1936 00:00
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US-2032360-A // Power line carrier system // Green Estill I. // American Telephone & Telegraph
PDF File 1803453.pdf 290 kB Shaun Ewing May 05, 1931 00:00
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US-1803453-A // System for communicating with moving vehicles // Affel Herman A. // American Telephone & Telegraph
PDF File 1900976.pdf 290 kB Shaun Ewing Mar 14, 1933 00:00
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US-1900976-A // Concentric conductor system // Carpe Allen ; Leibe Frank A. // American Telephone & Telegraph
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