Name Size Creator Creation Date Labels Comment  
PDF File 2271718.pdf 513 kB Shaun Ewing Feb 03, 1942 00:00
  • No labels
US-2271718-A // Telephone coin collector // Shann Oscar A. // Bell Telephone Labor Inc
PDF File 2332494.pdf 512 kB Shaun Ewing Oct 26, 1943 00:00
  • No labels
US-2332494-A // Signaling system // Babcock Stuart M. ; Jr. Arthur W. Horton, ; Logan Mason A. // Bell Telephone Labor Inc
PDF File 2287421.pdf 511 kB Shaun Ewing Jun 23, 1942 00:00
  • No labels
US-2287421-A // Stabilization of halogenated compounds // Egerton Lawson // Bell Telephone Labor Inc
PDF File 2252679.pdf 510 kB Shaun Ewing Aug 12, 1941 00:00
  • No labels
US-2252679-A // Preventing singing in telephone repeaters // Hawkins Russell S. // Bell Telephone Labor Inc
PDF File 2324809.pdf 510 kB Shaun Ewing Jul 20, 1943 00:00
  • No labels
US-2324809-A // Soldering method // Abbott Lester E. ; Werring Walter W. // Bell Telephone Labor Inc
PDF File 2346420.pdf 508 kB Shaun Ewing Apr 11, 1944 00:00
  • No labels
US-2346420-A // Selective signaling and lockout system // Entz Ferdinand S. // Bell Telephone Labor Inc
PDF File 2308634.pdf 508 kB Shaun Ewing Jan 19, 1943 00:00
  • No labels
US-2308634-A // Coin chute // Vieth Leonard // Bell Telephone Labor Inc
PDF File 2324797.pdf 508 kB Shaun Ewing Jul 20, 1943 00:00
  • No labels
US-2324797-A // Differentiating amplifier // Norton Edward L. // Bell Telephone Labor Inc
PDF File 2326053.pdf 507 kB Shaun Ewing Aug 03, 1943 00:00
  • No labels
US-2326053-A // Coil for relays and inductive apparatus // Morris Charles M. // Bell Telephone Labor Inc
PDF File 2338299.pdf 506 kB Shaun Ewing Jan 04, 1944 00:00
  • No labels
US-2338299-A // Armored conductor structure // Rasmussen Osvald E. // Bell Telephone Labor Inc
PDF File 2258275.pdf 506 kB Shaun Ewing Oct 07, 1941 00:00
  • No labels
US-2258275-A // Repeatered transmission system // Black Harold S. // Bell Telephone Labor Inc
PDF File 2343516.pdf 505 kB Shaun Ewing Mar 07, 1944 00:00
  • No labels
US-2343516-A // Signaling system // Atkins George E. // Bell Telephone Labor Inc
PDF File 2243426.pdf 505 kB Shaun Ewing May 27, 1941 00:00
  • No labels
US-2243426-A // Ultra high frequency system // Kircher Reymond J. // Bell Telephone Labor Inc
PDF File 2362182.pdf 504 kB Shaun Ewing Nov 07, 1944 00:00
  • No labels
US-2362182-A // Manufacture of cellulose acetate solutions // Baker William O. // Bell Telephone Labor Inc
PDF File 2320407.pdf 502 kB Shaun Ewing Jun 01, 1943 00:00
  • No labels
US-2320407-A // Retractile wheel assembly // Campbell Thaddeus C. // Bell Telephone Labor Inc
PDF File 2321714.pdf 502 kB Shaun Ewing Jun 15, 1943 00:00
  • No labels
US-2321714-A // Telephone system // Vroom Edward // Bell Telephone Labor Inc
PDF File 2361579.pdf 502 kB Shaun Ewing Oct 31, 1944 00:00
  • No labels
US-2361579-A // Panel selector switch // Wagenseil William O. // Bell Telephone Labor Inc
PDF File 2386454.pdf 502 kB Shaun Ewing Oct 09, 1945 00:00
  • No labels
US-2386454-A // High molecular weight linear polyester-amides // Frosch Carl J. // Bell Telephone Labor Inc
PDF File 2228113.pdf 502 kB Shaun Ewing Jan 07, 1941 00:00
  • No labels
US-2228113-A // Selective system // Hersey Ralph E. // Bell Telephone Labor Inc
PDF File 2235411.pdf 501 kB Shaun Ewing Mar 18, 1941 00:00
  • No labels
US-2235411-A // Regenerative repeater // Watson Edward F. // Bell Telephone Labor Inc
  1. Prev
  2. 1
  3. 59
  4. 60
  5. 61
  6. 62
  7. 63
  8. 64
  9. 65
  10. 66
  11. 67
  12. 68
  13. 69
  14. 70
  15. 71
  16. 89
  17. Next