Name Size Creator Creation Date Labels Comment  
PDF File 2586540.pdf 1.89 MB Shaun Ewing Feb 19, 1952 00:00
  • No labels
US-2586540-A // Torsion meter // Holden William H. T. // Bell Telephone Labor Inc
PDF File 2586534.pdf 689 kB Shaun Ewing Feb 19, 1952 00:00
  • No labels
US-2586534-A // Private branch exchange trunk circuit // Gray Preston R. // Bell Telephone Labor Inc
PDF File 2586080.pdf 772 kB Shaun Ewing Feb 19, 1952 00:00
  • No labels
US-2586080-A // Semiconductive signal translating device // Pfann William G. // Bell Telephone Labor Inc
PDF File 2585904.pdf 15.00 MB Shaun Ewing Feb 19, 1952 00:00
  • No labels
US-2585904-A // Crossbar telephone system // Busch Aloysius J. // Bell Telephone Labor Inc
PDF File 2585866.pdf 681 kB Shaun Ewing Feb 12, 1952 00:00
  • No labels
US-2585866-A // Antenna mechanism // Jr. Charles F. Spahn, // Bell Telephone Labor Inc
PDF File 2585842.pdf 782 kB Shaun Ewing Feb 12, 1952 00:00
  • No labels
US-2585842-A // Bridged t phase shifter // Richardson Paul H. // Bell Telephone Labor Inc
PDF File 2585841.pdf 787 kB Shaun Ewing Feb 12, 1952 00:00
  • No labels
US-2585841-A // Bridged t phase shifter // Richardson Paul H. // Bell Telephone Labor Inc
PDF File 2585772.pdf 490 kB Shaun Ewing Feb 12, 1952 00:00
  • No labels
US-2585772-A // Method and circuit for pulsation welding // Hasley Andrew D. ; Hibbard Frank H. // Bell Telephone Labor Inc
PDF File 2585722.pdf 1.10 MB Shaun Ewing Feb 12, 1952 00:00
  • No labels
US-2585722-A // Frequency divider // Baird Jack A. // Bell Telephone Labor Inc
PDF File 2585582.pdf 450 kB Shaun Ewing Feb 12, 1952 00:00
  • No labels
US-2585582-A // Electron gun // Pierce John R. // Bell Telephone Labor Inc
PDF File 2585571.pdf 1.49 MB Shaun Ewing Feb 12, 1952 00:00
  • No labels
US-2585571-A // Pulse repeater // Mohr Milton E. // Bell Telephone Labor Inc
PDF File 2585563.pdf 369 kB Shaun Ewing Feb 12, 1952 00:00
  • No labels
US-2585563-A // Wave filter // Lewis Willard D. ; Mumford William W. // Bell Telephone Labor Inc
PDF File 2585562.pdf 1.50 MB Shaun Ewing Feb 12, 1952 00:00
  • No labels
US-2585562-A // Directive antenna system // Lewis Willard D. // Bell Telephone Labor Inc
PDF File 2585545.pdf 516 kB Shaun Ewing Feb 12, 1952 00:00
  • No labels
US-2585545-A // Signaling system // Gannett Danforth K. // Bell Telephone Labor Inc
PDF File 2585078.pdf 1.50 MB Shaun Ewing Feb 12, 1952 00:00
  • No labels
US-2585078-A // Negative resistance device utilizing semiconductor amplifier // Barney Harold L. // Bell Telephone Labor Inc
PDF File 2585077.pdf 1.46 MB Shaun Ewing Feb 12, 1952 00:00
  • No labels
US-2585077-A // Control of impedance of semiconductor amplifier circuits // Barney Harold L. // Bell Telephone Labor Inc
PDF File 2585010.pdf 447 kB Shaun Ewing Feb 12, 1952 00:00
  • No labels
US-2585010-A // Wire connecting tool // Hickman Clarence N. ; Mallina Rudolph F. ; Reck Frank // Bell Telephone Labor Inc
PDF File 2584990.pdf 384 kB Shaun Ewing Feb 12, 1952 00:00
  • No labels
US-2584990-A // Transitor counting system // Dimond Thomas L. // Bell Telephone Labor Inc
PDF File 2584261.pdf 14.79 MB Shaun Ewing Feb 05, 1952 00:00
  • No labels
US-2584261-A // Ground trainer for aircraft crew // Davis Richard C. ; Fogarty Edward J. ; Rippere Robert O. // Bell Telephone Labor Inc
PDF File 2583562.pdf 504 kB Shaun Ewing Jan 29, 1952 00:00
  • No labels
US-2583562-A // Cathode-ray device // Gray Frank ; Sears Raymond W. // Bell Telephone Labor Inc
  1. Prev
  2. 1
  3. 46
  4. 47
  5. 48
  6. 49
  7. 50
  8. 51
  9. 52
  10. 53
  11. 54
  12. 55
  13. 56
  14. 57
  15. 58
  16. 72
  17. Next