Name Size Creator Creation Date Labels Comment  
PDF File 2094574.pdf 859 kB Shaun Ewing Oct 05, 1937 00:00
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US-2094574-A // Lock // Anderson Emil Nathaniel // American Telephone & Telegraph
PDF File 2094116.pdf 490 kB Shaun Ewing Sept 28, 1937 00:00
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US-2094116-A // Earth resistivity measurement // Bowen Arnold Everet // American Telephone & Telegraph
PDF File 2094113.pdf 464 kB Shaun Ewing Sept 28, 1937 00:00
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US-2094113-A // Wave transmission // Affel Herman A. // American Telephone & Telegraph
PDF File 2093525.pdf 1.33 MB Shaun Ewing Sept 21, 1937 00:00
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US-2093525-A // Echo suppressor apparatus // Mitchell Doren // American Telephone & Telegraph
PDF File 2093512.pdf 364 kB Shaun Ewing Sept 21, 1937 00:00
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US-2093512-A // Electrical measuring system // Bowen Arnold Everett // American Telephone & Telegraph
PDF File 2092861.pdf 389 kB Shaun Ewing Sept 14, 1937 00:00
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US-2092861-A // Oscillation generating circuits including gas-filled tube // Swart Loland ? // American Telephone & Telegraph
PDF File 2092851.pdf 597 kB Shaun Ewing Sept 14, 1937 00:00
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US-2092851-A // Resetting circuits for gas-filled tubes // Osgood Dexter T. // American Telephone & Telegraph
PDF File 2088722.pdf 937 kB Shaun Ewing Aug 03, 1937 00:00
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US-2088722-A // Vacuum tube with tank circuits // Potter Ralph Kimball // American Telephone & Telegraph
PDF File 2088702.pdf 1.35 MB Shaun Ewing Aug 03, 1937 00:00
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US-2088702-A // Transmission measuring apparatus // Hoppesch John W. // American Telephone & Telegraph
PDF File 2087950.pdf 405 kB Shaun Ewing Jul 27, 1937 00:00
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US-2087950-A // Electrical attenuator // Holden William Henry Towne // American Telephone & Telegraph
PDF File 2087949.pdf 523 kB Shaun Ewing Jul 27, 1937 00:00
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US-2087949-A // Electrical attenuator // Holden William H. T. // American Telephone & Telegraph
PDF File 2087352.pdf 488 kB Shaun Ewing Jul 20, 1937 00:00
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US-2087352-A // Signaling system // Mitchell Doren ; Abraham Leonard G. // American Telephone & Telegraph
PDF File 2087340.pdf 284 kB Shaun Ewing Jul 20, 1937 00:00
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US-2087340-A // Electrical protective system // Davis Rowland Fenner // American Telephone & Telegraph
PDF File 2086683.pdf 261 kB Shaun Ewing Jul 13, 1937 00:00
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US-2086683-A // Gas tube circuits for measuring short-lived impulses // Swart Lcland Kassov // American Telephone & Telegraph
PDF File 2086679.pdf 934 kB Shaun Ewing Jul 13, 1937 00:00
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US-2086679-A // Telegraph system // Rea Wilton Treat // American Telephone & Telegraph
PDF File 2085639.pdf 396 kB Shaun Ewing Jun 29, 1937 00:00
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US-2085639-A // Transmission regulation system // Cowan Frank A. // American Telephone & Telegraph
PDF File 2085637.pdf 1.47 MB Shaun Ewing Jun 29, 1937 00:00
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US-2085637-A // Teletypewriter exchange system // Collins Clarence V. // American Telephone & Telegraph
PDF File 2085175.pdf 490 kB Shaun Ewing Jun 29, 1937 00:00
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US-2085175-A // Teletypewriter // Thornton Floyd Edwin // American Telephone & Telegraph
PDF File 2085141.pdf 686 kB Shaun Ewing Jun 29, 1937 00:00
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US-2085141-A // Testing circuit for telephone systems // Bierstedt Gustav Carl // American Telephone & Telegraph
PDF File 2084457.pdf 798 kB Shaun Ewing Jun 22, 1937 00:00
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US-2084457-A // Transmission system // Schott Lionel // American Telephone & Telegraph
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