Name Size Creator Creation Date Labels Comment  
PDF File 1855153.pdf 806 kB Shaun Ewing Apr 19, 1932 00:00
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US-1855153-A // Automatic timing control for manually operated transmitters for ticker or step-by-step telegraph systems // Myer Percy L. // Western Union Telegraph Co
PDF File 1853005.pdf 715 kB Shaun Ewing Apr 05, 1932 00:00
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US-1853005-A // Repeater system // Morgenstern Ronald V. // Western Union Telegraph Co
PDF File 1851956.pdf 755 kB Shaun Ewing Mar 29, 1932 00:00
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US-1851956-A // Method of and apparatus for signaling in high speed telegraph systems // Dirkes Robert F. // Western Union Telegraph Co
PDF File 1851838.pdf 1.11 MB Shaun Ewing Mar 29, 1932 00:00
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US-1851838-A // Tape reperforator // Hoover Ray ; Haupt Frank J. // Western Union Telegraph Co
PDF File 1849994.pdf 458 kB Shaun Ewing Mar 15, 1932 00:00
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US-1849994-A // Cable fault detection and telephone system // Rudd Maurice A. ; Mample Adolph Z. // Western Union Telegraph Co
PDF File 1848022.pdf 778 kB Shaun Ewing Mar 01, 1932 00:00
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US-1848022-A // Polar relay // Milnor Joseph W. ; Demonet Eugene A. ; Bramhall Fay B. // Western Union Telegraph Co
PDF File 1845994.pdf 1.01 MB Shaun Ewing Feb 16, 1932 00:00
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US-1845994-A // Signal distortion indicator // Wise Raleigh J. // Western Union Telegraph Co
PDF File 1845993.pdf 642 kB Shaun Ewing Feb 16, 1932 00:00
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US-1845993-A // Electrical timing device // Wise Raleigh J. // Western Union Telegraph Co
PDF File 1845992.pdf 745 kB Shaun Ewing Feb 16, 1932 00:00
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US-1845992-A // High speed single current relay // Wise Raleigh J. // Western Union Telegraph Co
PDF File 1845979.pdf 505 kB Shaun Ewing Feb 16, 1932 00:00
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US-1845979-A // Preventing feed-back in amplifier tubes having common plate supply // Hyneman John R. // Western Union Telegraph Co
PDF File 1843909.pdf 810 kB Shaun Ewing Feb 09, 1932 00:00
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US-1843909-A // Start stop printing telegraph system // Angel Herbert ; Robinson James W. // Western Union Telegraph Co
PDF File 1842122.pdf 633 kB Shaun Ewing Jan 19, 1932 00:00
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US-1842122-A // Telegraph tape transmitter // Rothermel Samuel W. // Western Union Telegraph Co
PDF File 1841856.pdf 431 kB Shaun Ewing Jan 19, 1932 00:00
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US-1841856-A // Duplex repeater system // Teter Paul E. // Western Union Telegraph Co
PDF File 1836575.pdf 693 kB Shaun Ewing Dec 15, 1931 00:00
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US-1836575-A // Method of neutralizing disturbing frequencies in communication circuits // Cannon William D. // Western Union Telegraph Co
PDF File 1836000.pdf 632 kB Shaun Ewing Dec 08, 1931 00:00
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US-1836000-A // Repeater for signaling circuits // Morgenstern Ronald V. // Western Union Telegraph Co
PDF File 1835996.pdf 378 kB Shaun Ewing Dec 08, 1931 00:00
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US-1835996-A // Strap conveyer aligning mechanism // Creedon Michael V. ; Mcguinness William V. // Western Union Telegraph Co
PDF File 1834910.pdf 742 kB Shaun Ewing Dec 01, 1931 00:00
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US-1834910-A // Call signal and motor control box for simplex printers // Blanton William B. // Western Union Telegraph Co
PDF File 1834841.pdf 386 kB Shaun Ewing Dec 01, 1931 00:00
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US-1834841-A // Means for taking outgoing printed records // Hoover Ray ; Dirkes Robert F. // Western Union Telegraph Co
PDF File 1834828.pdf 1.26 MB Shaun Ewing Dec 01, 1931 00:00
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US-1834828-A // Printing telegraph system // Dirkes Robert F. ; Pomeroy Arthur L. // Western Union Telegraph Co
PDF File 1833874.pdf 523 kB Shaun Ewing Nov 24, 1931 00:00
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US-1833874-A // Clearing out strap for belt conveyers // Griffith Francis ; Smith Maurice B. // Western Union Telegraph Co
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