Name Size Creator Creation Date Labels Comment  
PDF File 1542779.pdf 460 kB Shaun Ewing Jun 16, 1925 00:00
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US-1542779-A // Tape transmitter // Peterman William C. // Western Union Telegraph Co
PDF File 1814947.pdf 459 kB Shaun Ewing Jul 14, 1931 00:00
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US-1814947-A // Automatic selective pneumatic tube carrier relay // Mcguinness William V. ; Francis William H. // Western Union Telegraph Co
PDF File 1773325.pdf 459 kB Shaun Ewing Aug 19, 1930 00:00
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US-1773325-A // Telegraph key // Steeneck Robert // 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 1809722.pdf 455 kB Shaun Ewing Jun 09, 1931 00:00
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US-1809722-A // Superposed telegraph system // Morgenstern Ronald V. ; Teter Paul E. // Western Union Telegraph Co
PDF File 1977120.pdf 454 kB Shaun Ewing Oct 16, 1934 00:00
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US-1977120-A // Optical system for ticker tape projectors // Dirkes Robert F. ; Clark Frances H. // Western Union Telegraph Co
PDF File 2212634.pdf 453 kB Shaun Ewing Aug 27, 1940 00:00
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US-2212634-A // Relay testing method and apparatus // Buckingham William D. // Western Union Telegraph Co
PDF File 1881739.pdf 453 kB Shaun Ewing Oct 11, 1932 00:00
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US-1881739-A // Concentration circuit for simplex printers // Light George G. // Western Union Telegraph Co
PDF File 2060574.pdf 453 kB Shaun Ewing Nov 10, 1936 00:00
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US-2060574-A // High speed composite system // Howe Paul J. ; Hamlett Robert T. ; Rudd Maurice A. // Western Union Telegraph Co
PDF File 2213392.pdf 451 kB Shaun Ewing Sept 03, 1940 00:00
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US-2213392-A // Discharge deflector for belt conveyer systems // Griffith Francis // Western Union Telegraph Co
PDF File 1826379.pdf 451 kB Shaun Ewing Oct 06, 1931 00:00
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US-1826379-A // Transfer means for belt conveyers // Birkmeyer Paul J. ; Creedon Michael V. ; Chadbourne William C. // Western Union Telegraph Co
PDF File 1814222.pdf 450 kB Shaun Ewing Jul 14, 1931 00:00
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US-1814222-A // Pneumatic tube system // Morehouse Harry W. // Western Union Telegraph Co
PDF File 1679326.pdf 448 kB Shaun Ewing Jul 31, 1928 00:00
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US-1679326-A // Potential-indicating system // Drake Herbert W. // Western Union Telegraph Co
PDF File 1640541.pdf 448 kB Shaun Ewing Aug 30, 1927 00:00
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US-1640541-A // Telegraph transmitter // Fluharty William G. // Western Union Telegraph Co
PDF File 2219250.pdf 448 kB Shaun Ewing Oct 22, 1940 00:00
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US-2219250-A // Electrical apparatus panel structure // Bramhall Fay B. // Western Union Telegraph Co
PDF File 1758900.pdf 446 kB Shaun Ewing May 13, 1930 00:00
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US-1758900-A // Superimposed telegraph circuits // Morgenstern Ronald V. // Western Union Telegraph Co
PDF File 2099540.pdf 445 kB Shaun Ewing Nov 16, 1937 00:00
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US-2099540-A // Insulator shield // Smith Donald H. // Western Union Telegraph Co
PDF File 1954624.pdf 444 kB Shaun Ewing Apr 10, 1934 00:00
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US-1954624-A // Balancing and testing telegraph circuits // Hackenberg John H. // Western Union Telegraph Co
PDF File 1880796.pdf 444 kB Shaun Ewing Oct 04, 1932 00:00
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US-1880796-A // Vacuum tube telegraph repeater // Case Harlow M. // Western Union Telegraph Co
PDF File 1975367.pdf 443 kB Shaun Ewing Oct 02, 1934 00:00
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US-1975367-A // Keyboard transmitter // Maus Frank J. ; Franklin Lawrence W. // Western Union Telegraph Co
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