Name Size Creator Creation Date Labels Comment  
PDF File 1629466.pdf 567 kB Shaun Ewing May 24, 1927 00:00
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US-1629466-A // Receiving perforator // Angel Herbert // Western Union Telegraph Co
PDF File 1636784.pdf 473 kB Shaun Ewing Jul 26, 1927 00:00
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US-1636784-A // Phase correction in synchronous telegraph systems // Parker Leighland F. ; Bramhall Fay B. // Western Union Telegraph Co
PDF File 1640325.pdf 588 kB Shaun Ewing Aug 23, 1927 00:00
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US-1640325-A // Messenger-call circuits and switching apparatus therefor // Janson George 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 1644262.pdf 357 kB Shaun Ewing Oct 04, 1927 00:00
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US-1644262-A // Gummed-tape-affixing device // Mason Roger // Western Union Telegraph Co
PDF File 1646354.pdf 383 kB Shaun Ewing Oct 18, 1927 00:00
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US-1646354-A // Synchronizing clocks over simplex circuits having central-battery telephone signaling // Drake Herbert W. // Western Union Telegraph Co
PDF File 1657384.pdf 676 kB Shaun Ewing Jan 24, 1928 00:00
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US-1657384-A // Telegraph system // Foster Lee R. // Western Union Telegraph Co
PDF File 1659303.pdf 198 kB Shaun Ewing Feb 14, 1928 00:00
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US-1659303-A // Connecting block for electric wiring // Rovere Lewis H. // Western Union Telegraph Co
PDF File 1671867.pdf 347 kB Shaun Ewing May 29, 1928 00:00
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US-1671867-A // Fastening device for guy ropes and other tensioning members // Mample Adolph Z. ; Harrall Edwin Russell // Western Union Telegraph Co
PDF File 1671869.pdf 238 kB Shaun Ewing May 29, 1928 00:00
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US-1671869-A // Desk clip for message blanks // Meader Ralph I. ; Hewitt Ernest Warden // Western Union Telegraph Co
PDF File 1673422.pdf 487 kB Shaun Ewing Jun 12, 1928 00:00
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US-1673422-A // Portable testing set for measuring line induction // Reisz Charles T. // Western Union Telegraph Co
PDF File 1673445.pdf 596 kB Shaun Ewing Jun 12, 1928 00:00
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US-1673445-A // Automatic reversing system for telegraph circuits // Dudley William A. // Western Union Telegraph Co
PDF File 1673697.pdf 641 kB Shaun Ewing Jun 12, 1928 00:00
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US-1673697-A // Relay and relaying system // Milnor Joseph W. // Western Union Telegraph Co
PDF File 1673726.pdf 516 kB Shaun Ewing Jun 12, 1928 00:00
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US-1673726-A // Regenerative telegraph repeater // Angel Herbert // Western Union Telegraph Co
PDF File 1677859.pdf 987 kB Shaun Ewing Jul 17, 1928 00:00
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US-1677859-A // Automatic reversing system for multiplex circuits // Dudley William A. // 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 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 1681489.pdf 2.40 MB Shaun Ewing Aug 21, 1928 00:00
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US-1681489-A // Signaling system // Locke George A. ; Haglund Hakon H. // Bell Telephone Labor Inc ; Western Union Telegraph Co
PDF File 1683578.pdf 336 kB Shaun Ewing Sept 04, 1928 00:00
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US-1683578-A // Cable car // Mobius Curt E. ; Engler Walter N. // Western Union Telegraph Co
PDF File 1684309.pdf 890 kB Shaun Ewing Sept 11, 1928 00:00
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US-1684309-A // Method of and means for feeding tape and projecting data therefrom // Dirkes Robert F. // Western Union Telegraph Co
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