Name Size Creator Creation Date Labels Comment  
PDF File 1827652.pdf 349 kB Shaun Ewing Oct 13, 1931 00:00
  • No labels
US-1827652-A // Tape feed mechanism for printing telegraph apparatus // Haglund Hakon H. ; Dickey Albert W. // Western Union Telegraph Co
PDF File 1828660.pdf 176 kB Shaun Ewing Oct 20, 1931 00:00
  • No labels
US-1828660-A // Method of and apparatus for driving tuning forks // Homer Edward C. ; Buckingham William D. // Western Union Telegraph Co
PDF File 1829653.pdf 554 kB Shaun Ewing Oct 27, 1931 00:00
  • No labels
US-1829653-A // Means for sending alternating currents to multiplex lines // Hoover Ray ; Dirkes Robert F. // Western Union Telegraph Co
PDF File 182996.pdf 244 kB Shaun Ewing Oct 10, 1876 00:00
  • No labels
US-182996-A // Improvement in acoustic telegraphs // Thomas A. Edison, Op New Jersey // The Westeen Union Telegeaph Company.
PDF File 1830700.pdf 630 kB Shaun Ewing Nov 03, 1931 00:00
  • No labels
US-1830700-A // Tape perforator and transmitter // Hoover Ray ; Haupt Frank J. // Western Union Telegraph Co
PDF File 1831700.pdf 412 kB Shaun Ewing Nov 10, 1931 00:00
  • No labels
US-1831700-A // Message copyholder and gumming desk for printing telegraph machines // Blanchard Rolla F. ; Porter James F. ; Marx George // Western Union Telegraph Co
PDF File 1832722.pdf 637 kB Shaun Ewing Nov 17, 1931 00:00
  • No labels
US-1832722-A // Shaping arrangement for metallic telegraph circuits // Morgenstern Ronald V. ; Erickson George L. // Western Union Telegraph Co
PDF File 1833874.pdf 523 kB Shaun Ewing Nov 24, 1931 00:00
  • No labels
US-1833874-A // Clearing out strap for belt conveyers // Griffith Francis ; Smith Maurice B. // Western Union Telegraph Co
PDF File 1834828.pdf 1.26 MB Shaun Ewing Dec 01, 1931 00:00
  • No labels
US-1834828-A // Printing telegraph system // Dirkes Robert F. ; Pomeroy Arthur L. // Western Union Telegraph Co
PDF File 1834841.pdf 386 kB Shaun Ewing Dec 01, 1931 00:00
  • No labels
US-1834841-A // Means for taking outgoing printed records // Hoover Ray ; Dirkes Robert F. // Western Union Telegraph Co
PDF File 1834910.pdf 742 kB Shaun Ewing Dec 01, 1931 00:00
  • No labels
US-1834910-A // Call signal and motor control box for simplex printers // Blanton William B. // Western Union Telegraph Co
PDF File 1835996.pdf 378 kB Shaun Ewing Dec 08, 1931 00:00
  • No labels
US-1835996-A // Strap conveyer aligning mechanism // Creedon Michael V. ; Mcguinness William V. // Western Union Telegraph Co
PDF File 1836000.pdf 632 kB Shaun Ewing Dec 08, 1931 00:00
  • No labels
US-1836000-A // Repeater for signaling circuits // Morgenstern Ronald V. // Western Union Telegraph Co
PDF File 1836575.pdf 693 kB Shaun Ewing Dec 15, 1931 00:00
  • No labels
US-1836575-A // Method of neutralizing disturbing frequencies in communication circuits // Cannon William D. // Western Union Telegraph Co
PDF File 1841856.pdf 431 kB Shaun Ewing Jan 19, 1932 00:00
  • No labels
US-1841856-A // Duplex repeater system // Teter Paul E. // Western Union Telegraph Co
PDF File 1842122.pdf 633 kB Shaun Ewing Jan 19, 1932 00:00
  • No labels
US-1842122-A // Telegraph tape transmitter // Rothermel Samuel W. // Western Union Telegraph Co
PDF File 1843909.pdf 810 kB Shaun Ewing Feb 09, 1932 00:00
  • No labels
US-1843909-A // Start stop printing telegraph system // Angel Herbert ; Robinson James W. // Western Union Telegraph Co
PDF File 1845979.pdf 505 kB Shaun Ewing Feb 16, 1932 00:00
  • No labels
US-1845979-A // Preventing feed-back in amplifier tubes having common plate supply // Hyneman John R. // Western Union Telegraph Co
PDF File 1845992.pdf 745 kB Shaun Ewing Feb 16, 1932 00:00
  • No labels
US-1845992-A // High speed single current relay // Wise Raleigh J. // Western Union Telegraph Co
PDF File 1845993.pdf 642 kB Shaun Ewing Feb 16, 1932 00:00
  • No labels
US-1845993-A // Electrical timing device // Wise Raleigh J. // Western Union Telegraph Co
  1. Prev
  2. 1
  3. 5
  4. 6
  5. 7
  6. 8
  7. 9
  8. 10
  9. 11
  10. 12
  11. 13
  12. 14
  13. 15
  14. 16
  15. 17
  16. 42
  17. Next