Name Size Creator Creation Date Labels Comment  
PDF File 1455827.pdf 412 kB Shaun Ewing May 22, 1923 00:00
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US-1455827-A // Selective circuit for multiplex transmission // Affel Herman A. // American Telephone & Telegraph
PDF File 1711550.pdf 412 kB Shaun Ewing May 07, 1929 00:00
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US-1711550-A // Alternating-current relay // Sturdy William W. // American Telephone & Telegraph
PDF File 1667753.pdf 412 kB Shaun Ewing May 01, 1928 00:00
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US-1667753-A // Program-selecting circuits // Toomey John F. // American Telephone & Telegraph
PDF File 1773785.pdf 411 kB Shaun Ewing Aug 26, 1930 00:00
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US-1773785-A // Electrooptical system // Nyquist Harry // American Telephone & Telegraph
PDF File 1646444.pdf 411 kB Shaun Ewing Oct 25, 1927 00:00
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US-1646444-A // Protection circuits // Carpe Allen ; Deardorff Ralph W. // American Telephone & Telegraph
PDF File 1633611.pdf 411 kB Shaun Ewing Jun 28, 1927 00:00
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US-1633611-A // Means for preventing electrical interfer ence // Shanck Roy B. // American Telephone & Telegraph
PDF File 1459004.pdf 411 kB Shaun Ewing Jun 19, 1923 00:00
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US-1459004-A // Means for equalizing transmission over lines of different electrical characteristics // Thompson George K. // American Telephone & Telegraph
PDF File 1591073.pdf 410 kB Shaun Ewing Jul 06, 1926 00:00
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US-1591073-A // Electrical network // Zobel Otto J. // American Telephone & Telegraph
PDF File 1737652.pdf 410 kB Shaun Ewing Dec 03, 1929 00:00
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US-1737652-A // Ballast lamp and filament-activity test for repeaters // Gannett Danforth K. // American Telephone & Telegraph
PDF File 1662888.pdf 410 kB Shaun Ewing Mar 20, 1928 00:00
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US-1662888-A // Automatic volume control for telephone lines // Herman Joseph // American Telephone & Telegraph
PDF File 1450966.pdf 409 kB Shaun Ewing Apr 10, 1923 00:00
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US-1450966-A // Synchronizing system // Affel Herman A. // American Telephone & Telegraph
PDF File 1706538.pdf 409 kB Shaun Ewing Mar 26, 1929 00:00
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US-1706538-A // Testing television and like system // Mertz Pierre // American Telephone & Telegraph
PDF File 1704786.pdf 408 kB Shaun Ewing Mar 12, 1929 00:00
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US-1704786-A // Cross-talk meter // Chapman Arthur G. // American Telephone & Telegraph
PDF File 1458988.pdf 408 kB Shaun Ewing Jun 19, 1923 00:00
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US-1458988-A // Means for equalizing transmission over lines of different electrical characteristics // Morehouse Lyman F. // American Telephone & Telegraph
PDF File 1635209.pdf 408 kB Shaun Ewing Jul 12, 1927 00:00
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US-1635209-A // Telegraph distortion-measuring system // Fell John M. // American Telephone & Telegraph
PDF File 1780229.pdf 408 kB Shaun Ewing Nov 04, 1930 00:00
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US-1780229-A // Oscillation generator // Green Estill I. // American Telephone & Telegraph
PDF File 1626731.pdf 406 kB Shaun Ewing May 03, 1927 00:00
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US-1626731-A // Method of and apparatus for synchronization in picture transmission // Herman Joseph // American Telephone & Telegraph
PDF File 1644024.pdf 406 kB Shaun Ewing Oct 04, 1927 00:00
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US-1644024-A // Lighting circuit // Mccurdy Ralph G. // American Telephone & Telegraph
PDF File 1574807.pdf 406 kB Shaun Ewing Mar 02, 1926 00:00
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US-1574807-A // Means for regulating voltages // Gannett Danforth K. // American Telephone & Telegraph
PDF File 1608566.pdf 405 kB Shaun Ewing Nov 30, 1926 00:00
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US-1608566-A // System for binaural transmission of sound // Potter Ralph K. // American Telephone & Telegraph
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