Name Size Creator Creation Date Labels Comment  
PDF File 1895569.pdf 294 kB Shaun Ewing Jan 31, 1933 00:00
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US-1895569-A // Production of protective coatings on iron and steel articles // Curtin Leo P. ; Kline Bernard L. // Western Union Telegraph Co
PDF File 1899674.pdf 154 kB Shaun Ewing Feb 28, 1933 00:00
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US-1899674-A // Process for the production of ferric oxalate // Curtin Leo P. // Western Union Telegraph Co
PDF File 1901296.pdf 1.75 MB Shaun Ewing Mar 14, 1933 00:00
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US-1901296-A // Multiplex telegraph system // Haglund Hakon H. // Western Union Telegraph Co
PDF File 1901318.pdf 862 kB Shaun Ewing Mar 14, 1933 00:00
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US-1901318-A // Means for balancing cables equipped with a long sea-earth // Milnor Joseph W. // Western Union Telegraph Co
PDF File 1902170.pdf 979 kB Shaun Ewing Mar 21, 1933 00:00
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US-1902170-A // Dividing received intelligence into two or more groups // Kimball Vernon R. // Western Union Telegraph Co
PDF File 1904265.pdf 704 kB Shaun Ewing Apr 18, 1933 00:00
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US-1904265-A // Automatic operator indicator for busy lines at central offices // Blanton William B. // Western Union Telegraph Co
PDF File 1909201.pdf 554 kB Shaun Ewing May 16, 1933 00:00
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US-1909201-A // Printing telegraph system // Long James W. ; Steeneck Robert // Western Union Telegraph Co
PDF File 1910122.pdf 652 kB Shaun Ewing May 23, 1933 00:00
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US-1910122-A // Ticker system // Myer Percy L. ; Steeneck Robert // 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
PDF File 1911158.pdf 612 kB Shaun Ewing May 23, 1933 00:00
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US-1911158-A // Discharge for drac conveyers // Lihe Marold G. // Western Union Telegraph Co
PDF File 1912183.pdf 853 kB Shaun Ewing May 30, 1933 00:00
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US-1912183-A // Transmitter for automatic telegraph systems // Dirkes Robert F. ; Wheeler Evan R. // Western Union Telegraph Co
PDF File 1912343.pdf 424 kB Shaun Ewing May 30, 1933 00:00
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US-1912343-A // Tuning fork temperature compensation and frequency adjustment // Buckingham William D. // Western Union Telegraph Co
PDF File 1913307.pdf 1.32 MB Shaun Ewing Jun 06, 1933 00:00
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US-1913307-A // Telegraph system adapted for ocean cable telegraphy // Haglund Hakon H. // Western Union Telegraph Co
PDF File 1913331.pdf 710 kB Shaun Ewing Jun 06, 1933 00:00
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US-1913331-A // Tuning fork drive // Buckingham William D. // Western Union Telegraph Co
PDF File 1914114.pdf 209 kB Shaun Ewing Jun 13, 1933 00:00
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US-1914114-A // Electrolytic cell // Estes Phillip H. // Western Union Telegraph Co
PDF File 1914328.pdf 1.23 MB Shaun Ewing Jun 13, 1933 00:00
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US-1914328-A // Telegraph repeater for uniform impulse code // Haglund Hakon H. // Western Union Telegraph Co
PDF File 1916168.pdf 1.84 MB Shaun Ewing Jun 27, 1933 00:00
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US-1916168-A // Telegraph receiving apparatus // Dirkes Robert F. ; Wheeler Evan R. // Western Union Telegraph Co
PDF File 1917195.pdf 1.02 MB Shaun Ewing Jul 04, 1933 00:00
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US-1917195-A // Extended channel system // Noxon Paul A. // Western Union Telegraph Co
PDF File 1918199.pdf 404 kB Shaun Ewing Jul 11, 1933 00:00
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US-1918199-A // Electric switch // Ward Harley M. // Western Union Telegraph Co
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