Name Size Creator Creation Date Labels Comment  
PDF File 2032513.pdf 634 kB Shaun Ewing Mar 03, 1936 00:00
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US-2032513-A // Electrical protective system // Swart Leland Kasson // American Telephone & Telegraph
PDF File 1848222.pdf 633 kB Shaun Ewing Mar 08, 1932 00:00
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US-1848222-A // Producing musical sounds // Potter Ralph K. // American Telephone & Telegraph
PDF File 2163195.pdf 632 kB Shaun Ewing Jun 20, 1939 00:00
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US-2163195-A // Mechanical relay // Edwards Paul Griffith // American Telephone & Telegraph
PDF File 1903875.pdf 632 kB Shaun Ewing Apr 18, 1933 00:00
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US-1903875-A // Transmission control // Mitchell Doren // American Telephone & Telegraph
PDF File 1930631.pdf 631 kB Shaun Ewing Oct 17, 1933 00:00
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US-1930631-A // Signaling system // Thompson Albert C. // American Telephone & Telegraph
PDF File 2096145.pdf 628 kB Shaun Ewing Oct 19, 1937 00:00
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US-2096145-A // Teletypewriter // Swezey Burdette Stevens // American Telephone & Telegraph
PDF File 1946615.pdf 626 kB Shaun Ewing Feb 13, 1934 00:00
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US-1946615-A // Signaling system // Demarest Charles Sidney // American Telephone & Telegraph
PDF File 2036332.pdf 624 kB Shaun Ewing Apr 07, 1936 00:00
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US-2036332-A // Signal distortion indicator // Herman Joseph // American Telephone & Telegraph
PDF File 1797317.pdf 622 kB Shaun Ewing Mar 24, 1931 00:00
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US-1797317-A // Binaural phase-discrimination radio system // Brand Smart ; Mertz Pierre // American Telephone & Telegraph
PDF File 2040471.pdf 621 kB Shaun Ewing May 12, 1936 00:00
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US-2040471-A // Selective signaling system // Coxhead Harry Burrows // American Telephone & Telegraph
PDF File 2037865.pdf 619 kB Shaun Ewing Apr 21, 1936 00:00
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US-2037865-A // Diversity reception system // Potter Ralph K. // American Telephone & Telegraph
PDF File 2022248.pdf 618 kB Shaun Ewing Nov 26, 1935 00:00
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US-2022248-A // Television equipment // Lofgren Benjamin F. // American Telephone & Telegraph
PDF File 2109562.pdf 616 kB Shaun Ewing Mar 01, 1938 00:00
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US-2109562-A // Transmission system // Bagnall Vernon Barnard // American Telephone & Telegraph
PDF File 1977254.pdf 615 kB Shaun Ewing Oct 16, 1934 00:00
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US-1977254-A // Glow discharge tube circuit // Swart Leland K. // American Telephone & Telegraph
PDF File 1938732.pdf 615 kB Shaun Ewing Dec 12, 1933 00:00
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US-1938732-A // System for improving the shielding effect of ground wires and shield wires // Vaage Emil Fridstein // American Telephone & Telegraph
PDF File 2050265.pdf 614 kB Shaun Ewing Aug 11, 1936 00:00
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US-2050265-A // Iterative telegraph system // Bown Raiph // American Telephone & Telegraph
PDF File 2054008.pdf 613 kB Shaun Ewing Sept 08, 1936 00:00
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US-2054008-A // Electrical protective system // Swart Leland Kasson ; Tebo Julian Drenner // American Telephone & Telegraph ; Bell Telephone Labor Inc
PDF File 1961407.pdf 613 kB Shaun Ewing Jun 05, 1934 00:00
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US-1961407-A // Printing telegraph system // Vernam Gilbert S. ; Locke George A. // American Telephone & Telegraph ; Bell Telephone Labor Inc
PDF File 1918390.pdf 612 kB Shaun Ewing Jul 18, 1933 00:00
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US-1918390-A // Transmission control // Green Estill I. // American Telephone & Telegraph
PDF File 2221136.pdf 611 kB Shaun Ewing Nov 12, 1940 00:00
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US-2221136-A // Telegraph system // Harms Gordon John // American Telephone & Telegraph
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