Name Size Creator Creation Date Labels Comment  
PDF File 1232183.pdf 396 kB Shaun Ewing Jul 03, 1917 00:00
  • No labels
US-1232183-A // Controlling system. // Henry M. Bascom // American Telephone & Telegraph
PDF File 937189.pdf 395 kB Shaun Ewing Oct 19, 1909 00:00
  • No labels
US-937189-A // Telephone repeating system. // Herbert E. Shreeve // American Telephone & Telegraph
PDF File 1320489.pdf 394 kB Shaun Ewing Nov 04, 1919 00:00
  • No labels
US-1320489-A // Method of constructing telephone-circuits // Harold S. Osbobhe, Of N. Y. // American Telephone & Telegraph, New York NY
PDF File 1060308.pdf 388 kB Shaun Ewing Apr 29, 1913 00:00
  • No labels
US-1060308-A // Intercommunicating telephone system. // Leon D. Barrows // American Telephone & Telegraph
PDF File 835037.pdf 386 kB Shaun Ewing Nov 06, 1906 00:00
  • No labels
US-835037-A // Telephone repeater circuit and apparatus. // Herbert E. Shreeve // American Telephone & Telegraph
PDF File 506883.pdf 384 kB Shaun Ewing Oct 17, 1893 00:00
  • No labels
US-506883-A // Visible signal // Frederic S. Perrin, Of N. Y. // American Telephone & Telegraph, New York NY
PDF File 1186577.pdf 384 kB Shaun Ewing Jun 13, 1916 00:00
  • No labels
US-1186577-A // Attachment for coin-collecting apparatus. // Alfred U. Hoefer ; Leon D. Barrows // American Telephone & Telegraph
PDF File 851856.pdf 383 kB Shaun Ewing Apr 30, 1907 00:00
  • No labels
US-851856-A // Means for nullifying inductive interference between parallel circuits. // Edward Blakeney // American Telephone & Telegraph
PDF File 1103130.pdf 381 kB Shaun Ewing Jul 14, 1914 00:00
  • No labels
US-1103130-A // Connection for coil-cases and cables. // James Cunningham ; William H. Horner // American Telephone & Telegraph
PDF File 667327.pdf 381 kB Shaun Ewing Feb 05, 1901 00:00
  • No labels
US-667327-A // Telephone-transmitter. // Tiodolf Lidberg // Swedish American Telephone Company
PDF File 1211044.pdf 380 kB Shaun Ewing Jan 02, 1917 00:00
  • No labels
US-1211044-A // Signaling system. // Henry M. Bascom // American Telephone & Telegraph
PDF File 1363220.pdf 377 kB Shaun Ewing Dec 28, 1920 00:00
  • No labels
US-1363220-A // Signaling device // Bascom Henry M. // American Telephone & Telegraph
PDF File 1090990.pdf 374 kB Shaun Ewing Mar 24, 1914 00:00
  • No labels
US-1090990-A // Electric transmission of energy. // Isidor Kitsee // American Telephone & Telegraph
PDF File 1233767.pdf 368 kB Shaun Ewing Jul 17, 1917 00:00
  • No labels
US-1233767-A // Duplex circuit. // Lloyd Espenschied // American Telephone & Telegraph
PDF File 1103421.pdf 363 kB Shaun Ewing Jul 14, 1914 00:00
  • No labels
US-1103421-A // Cable telegraphy. // Isidor Kitsee // American Telephone & Telegraph
PDF File 1361486.pdf 350 kB Shaun Ewing Dec 07, 1920 00:00
  • No labels
US-1361486-A // Composite signaling system // Osborne Harold S. ; Parker Ralzemond D. // American Telephone & Telegraph
PDF File 1064433.pdf 350 kB Shaun Ewing Jun 10, 1913 00:00
  • No labels
US-1064433-A // Method of reducing telephonic disturbances. // Otto B. Blackwell ; Gustavus A. Anderegg // American Telephone & Telegraph
PDF File 1207836.pdf 348 kB Shaun Ewing Dec 12, 1916 00:00
  • No labels
US-1207836-A // Connecting system for telephone-stations. // Leon D. Barrows // American Telephone & Telegraph
PDF File 1245321.pdf 347 kB Shaun Ewing Nov 06, 1917 00:00
  • No labels
US-1245321-A // Testing-circuit for measured-service apparatus. // John Davidson, Jr. // American Telephone & Telegraph
PDF File 705936.pdf 344 kB Shaun Ewing Jul 29, 1902 00:00
  • No labels
US-705936-A // Loaded electric circuit. // John C. Lee ; Edwin H. Colpitts // American Telephone & Telegraph
  1. Prev
  2. 1
  3. 7
  4. 8
  5. 9
  6. 10
  7. 11
  8. 12
  9. 13
  10. 14
  11. 15
  12. 16
  13. 17
  14. Next