Name Size Creator Creation Date Labels Comment  
PDF File 203016.pdf 257 kB Shaun Ewing Apr 30, 1878 00:00
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US-203016-A // Improvement in speaking-telephone // Edison Thomas A // Western Union Telegraph Company
PDF File 203018.pdf 254 kB Shaun Ewing Apr 30, 1878 00:00
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US-203018-A // Improvement in telephones or speaking-telegraphs // Thomas A. Edison, Of New Jeesey // Western Union Teleobaph Company, Of New Yoek, N. Y.
PDF File 474231.pdf 253 kB Shaun Ewing May 03, 1892 00:00
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US-474231-A // Thomas a // Thomas A. Edison", Of New Jersey // The Western Union" Telegraph Company, Of New York, N. Y.
PDF File 2173741.pdf 253 kB Shaun Ewing Sept 19, 1939 00:00
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US-2173741-A // Electrostatic recording mechanism // Wise Raleigh J. ; O'Brien Frederic L. // Western Union Telegraph Co
PDF File 1984254.pdf 253 kB Shaun Ewing Dec 11, 1934 00:00
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US-1984254-A // Preservation of wood // Curtin Leo P. ; Thordarson William // Western Union Telegraph Co
PDF File 1919161.pdf 252 kB Shaun Ewing Jul 18, 1933 00:00
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US-1919161-A // Pilot lamp arrangement for multiplex telegraph printers // Franklin Laurence W. ; Maus Frank J. // Western Union Telegraph Co
PDF File 1687432.pdf 252 kB Shaun Ewing Oct 09, 1928 00:00
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US-1687432-A // Composite signaling system // Drake Herbert W. // Western Union Telegraph Co
PDF File 1355085.pdf 251 kB Shaun Ewing Oct 05, 1920 00:00
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US-1355085-A // Differentially-wound electromagnet // Beasley Harry K. // Western Union Telegraph Co
PDF File 1681284.pdf 250 kB Shaun Ewing Aug 21, 1928 00:00
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US-1681284-A // Dry-spot cross-arm terminal box // Dickie Douglas P. // Western Union Telegraph Co
PDF File 1971146.pdf 249 kB Shaun Ewing Aug 21, 1934 00:00
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US-1971146-A // Electrical protective device // Rovere Lewis H. ; Estes Phillip H. ; Milnor Joseph W. // Western Union Telegraph Co
PDF File 2018102.pdf 248 kB Shaun Ewing Oct 22, 1935 00:00
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US-2018102-A // Oscillatory grid-controlled detector or relay // Watts Pryor L. ; Eller Keith B. // Western Union Telegraph Co
PDF File 1584684.pdf 248 kB Shaun Ewing May 11, 1926 00:00
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US-1584684-A // Duplex system of telegraphy // Drake Herbert W. // Western Union Telegraph Co
PDF File 350469.pdf 248 kB Shaun Ewing Oct 05, 1886 00:00
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US-350469-A // Printing-telegraph // D. Bryce Scott, Op New York // Western Union Telegraph Co Op New York.
PDF File 1918203.pdf 245 kB Shaun Ewing Jul 11, 1933 00:00
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US-1918203-A // Speed governor for alternating current motors // Wise Raleigh J. // Western Union Telegraph Co
PDF File 2128680.pdf 245 kB Shaun Ewing Aug 30, 1938 00:00
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US-2128680-A // Shaping signals in single current telegraph circuits // Light George G. // Western Union Telegraph Co
PDF File 182996.pdf 244 kB Shaun Ewing Oct 10, 1876 00:00
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US-182996-A // Improvement in acoustic telegraphs // Thomas A. Edison, Op New Jersey // The Westeen Union Telegeaph Company.
PDF File 1722323.pdf 244 kB Shaun Ewing Jul 30, 1929 00:00
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US-1722323-A // Wood preservative // Curtin Leo P. // 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 1910593.pdf 242 kB Shaun Ewing May 23, 1933 00:00
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US-1910593-A // Process of forming oxalate coatings on iron and steel articles // Curtin Leo P. // Western Union Telegraph Co
PDF File 1911133.pdf 242 kB Shaun Ewing May 23, 1933 00:00
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US-1911133-A // Self-biasing relay circuit // Pollard Leon G. // Western Union Telegraph Co
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