Name Size Creator Creation Date Labels Comment  
PDF File 2567415.pdf 402 kB Shaun Ewing Sept 11, 1951 00:00
  • No labels
US-2567415-A // Grid assembly and method of fabrication // Walsh Edward J. // Bell Telephone Labor Inc
PDF File 2567797.pdf 397 kB Shaun Ewing Sept 11, 1951 00:00
  • No labels
US-2567797-A // Current supply apparatus // Anderson Frederic W. // Bell Telephone Labor Inc
PDF File 2567812.pdf 847 kB Shaun Ewing Sept 11, 1951 00:00
  • No labels
US-2567812-A // Code transmitter // Hickman Clarence N. // Bell Telephone Labor Inc
PDF File 2567824.pdf 676 kB Shaun Ewing Sept 11, 1951 00:00
  • No labels
US-2567824-A // Automatic gain control // Nylund Harry W. // Bell Telephone Labor Inc
PDF File 2567827.pdf 1.09 MB Shaun Ewing Sept 11, 1951 00:00
  • No labels
US-2567827-A // Time delay relay // Stoller Marian M. // Bell Telephone Labor Inc
PDF File 2567970.pdf 756 kB Shaun Ewing Sept 18, 1951 00:00
  • No labels
US-2567970-A // Semiconductor comprising silicon and method of making it // Scaff Jack H. ; Theuerer Henry C. // Bell Telephone Labor Inc
PDF File 2568138.pdf 724 kB Shaun Ewing Sept 18, 1951 00:00
  • No labels
US-2568138-A // Combined line and tripping relay circuit for telephone lines // Beaumont William M. // Bell Telephone Labor Inc
PDF File 2568150.pdf 1.34 MB Shaun Ewing Sept 18, 1951 00:00
  • No labels
US-2568150-A // Balancing network for subscribers' telephone sets // Graham Frank H. // Bell Telephone Labor Inc
PDF File 2568164.pdf 943 kB Shaun Ewing Sept 18, 1951 00:00
  • No labels
US-2568164-A // Key pulsing b operator position circuit // Noweck Herman E. ; Robb Theodore D. // Bell Telephone Labor Inc
PDF File 2568172.pdf 394 kB Shaun Ewing Sept 18, 1951 00:00
  • No labels
US-2568172-A // Current supply apparatus // Spencer Harry H. // Bell Telephone Labor Inc
PDF File 2568177.pdf 708 kB Shaun Ewing Sept 18, 1951 00:00
  • No labels
US-2568177-A // Signaling system // Vroom Edward // Bell Telephone Labor Inc
PDF File 2568804.pdf 971 kB Shaun Ewing Sept 25, 1951 00:00
  • No labels
US-2568804-A // Automatic telephone system auxiliary line finder arrangement // Hall Oliver C. // Bell Telephone Labor Inc
PDF File 2568823.pdf 874 kB Shaun Ewing Sept 25, 1951 00:00
  • No labels
US-2568823-A // Loud-speaking telephone set // Potter Ralph K. // Bell Telephone Labor Inc
PDF File 2569347.pdf 1.79 MB Shaun Ewing Sept 25, 1951 00:00
  • No labels
US-2569347-A // Circuit element utilizing semiconductive material // Shockley William // Bell Telephone Labor Inc
PDF File 2569443.pdf 2.54 MB Shaun Ewing Oct 02, 1951 00:00
  • No labels
US-2569443-A // Telegraph storage system // Bacon Walter M. // Bell Telephone Labor Inc
PDF File 2569478.pdf 6.44 MB Shaun Ewing Oct 02, 1951 00:00
  • No labels
US-2569478-A // Telegraph storage system // Locke George A. // Bell Telephone Labor Inc
PDF File 2570225.pdf 597 kB Shaun Ewing Oct 09, 1951 00:00
  • No labels
US-2570225-A // Series electronic switch // Felker Jean H. // Bell Telephone Labor Inc
PDF File 2570305.pdf 1.84 MB Shaun Ewing Oct 09, 1951 00:00
  • No labels
US-2570305-A // Electric wave transmission // Barney Harold L. // Bell Telephone Labor Inc
PDF File 2570505.pdf 800 kB Shaun Ewing Oct 09, 1951 00:00
  • No labels
US-2570505-A // Automatic system for checking receipt of telegraph messages in numerical order // Watson Edward F. // Bell Telephone Labor Inc
PDF File 2570912.pdf 503 kB Shaun Ewing Oct 09, 1951 00:00
  • No labels
US-2570912-A // Method and means for locating nonlinearities in inaccessible cables // Bishop Walter M. // Bell Telephone Labor Inc
  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. 18
  15. 19
  16. 72
  17. Next