Name Size Creator Creation Date Labels Comment  
PDF File 1416594.pdf 389 kB Shaun Ewing May 16, 1922 00:00
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US-1416594-A // Call-box transmitter // Atherton Albert // Western Union Telegraph Co
PDF File 1416642.pdf 341 kB Shaun Ewing May 16, 1922 00:00
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US-1416642-A // Call-box contact mechanism // Janson George W. // Western Union Telegraph Co
PDF File 1431865.pdf 774 kB Shaun Ewing Oct 10, 1922 00:00
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US-1431865-A // Cable telegraphy // Angel Herbert // Western Union Telegraph Co
PDF File 1439633.pdf 701 kB Shaun Ewing Dec 19, 1922 00:00
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US-1439633-A // Method of and apparatus for telegraphic transmission // Milnor Joseph W. // Western Union Telegraph Co
PDF File 1447747.pdf 629 kB Shaun Ewing Mar 06, 1923 00:00
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US-1447747-A // Method of and apparatus for operating synchronous telegraph systems // Benjamin George R. // Western Union Telegraph Co
PDF File 1447748.pdf 745 kB Shaun Ewing Mar 06, 1923 00:00
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US-1447748-A // Method of and apparatus for operating synchronous telegraph systems // Benjamin George R. // Western Union Telegraph Co
PDF File 1457249.pdf 224 kB Shaun Ewing May 29, 1923 00:00
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US-1457249-A // Electrical protector // Janson George W. ; Rovere Lewis H. // Western Union Telegraph Co
PDF File 1461645.pdf 1022 kB Shaun Ewing Jul 10, 1923 00:00
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US-1461645-A // Automatic telegraph system // Benjamin George R. // Western Union Telegraph Co
PDF File 1466623.pdf 314 kB Shaun Ewing Aug 28, 1923 00:00
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US-1466623-A // Adjustable-vibration tuning fork // Houghtaling Walter A. // Western Union Telegraph Co
PDF File 1473582.pdf 262 kB Shaun Ewing Nov 06, 1923 00:00
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US-1473582-A // Pole cleaning and shaving machine // Leedom Randolph // Western Union Telegraph Co
PDF File 1487691.pdf 519 kB Shaun Ewing Mar 18, 1924 00:00
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US-1487691-A // Telegraph synchronizing system // Murray Donald // Western Union Telegraph Co
PDF File 1499938.pdf 704 kB Shaun Ewing Jul 01, 1924 00:00
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US-1499938-A // Earth-boring machine // Leedom Randolph // Western Union Telegraph Co
PDF File 1501679.pdf 368 kB Shaun Ewing Jul 15, 1924 00:00
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US-1501679-A // Printing telegraph // Murray Donald // Western Union Telegraph Co
PDF File 1517110.pdf 242 kB Shaun Ewing Nov 25, 1924 00:00
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US-1517110-A // Telegraph-transmitting apparatus // Foley Thomas Francis // Western Union Telegraph Co
PDF File 1519082.pdf 231 kB Shaun Ewing Dec 09, 1924 00:00
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US-1519082-A // Corner gauge // Howe Paul J. // Western Union Telegraph Co
PDF File 1519870.pdf 579 kB Shaun Ewing Dec 16, 1924 00:00
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US-1519870-A // Balancing ocean-cable system // Milnor Joseph W. // Western Union Telegraph Co
PDF File 1530381.pdf 639 kB Shaun Ewing Mar 17, 1925 00:00
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US-1530381-A // Tube-expanding tool // Leedom Randolph // Western Union Telegraph Co
PDF File 1535073.pdf 618 kB Shaun Ewing Apr 21, 1925 00:00
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US-1535073-A // Synchronous telegraph system // Foll John Victor // Western Union Telegraph Co
PDF File 1535074.pdf 330 kB Shaun Ewing Apr 21, 1925 00:00
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US-1535074-A // Trouble indicator for telegraph systems // Houghtaling Walter A. // Western Union Telegraph Co
PDF File 1535627.pdf 470 kB Shaun Ewing Apr 28, 1925 00:00
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US-1535627-A // Telegraph system // Perkins Samuel W. // Western Union Telegraph Co
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