Unable to load page tree. It seems that you do not have permission to view the root page.
Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 2149356.pdf | 1.13 MB | Shaun Ewing | Mar 07, 1939 00:00 |
|
US-2149356-A // Wave transmission network // Mason Warren P. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.13 MB | Shaun Ewing | Mar 07, 1939 00:00 | US-2149356-A // Wave transmission network // Mason Warren P. // Bell Telephone Labor Inc | ||||
| PDF File 2149355.pdf | 644 kB | Shaun Ewing | Mar 07, 1939 00:00 |
|
US-2149355-A // Selective system // Lundstrom Alexis A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 644 kB | Shaun Ewing | Mar 07, 1939 00:00 | US-2149355-A // Selective system // Lundstrom Alexis A. // Bell Telephone Labor Inc | ||||
| PDF File 2149343.pdf | 2.36 MB | Shaun Ewing | Mar 07, 1939 00:00 |
|
US-2149343-A // Signaling system // Hubbard Francis A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.36 MB | Shaun Ewing | Mar 07, 1939 00:00 | US-2149343-A // Signaling system // Hubbard Francis A. // Bell Telephone Labor Inc | ||||
| PDF File 2149341.pdf | 201 kB | Shaun Ewing | Mar 07, 1939 00:00 |
|
US-2149341-A // Earphone support // Harrison Henry C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 201 kB | Shaun Ewing | Mar 07, 1939 00:00 | US-2149341-A // Earphone support // Harrison Henry C. // Bell Telephone Labor Inc | ||||
| PDF File 2149336.pdf | 1.06 MB | Shaun Ewing | Mar 07, 1939 00:00 |
|
US-2149336-A // Inductive device // Darnell Paul S. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.06 MB | Shaun Ewing | Mar 07, 1939 00:00 | US-2149336-A // Inductive device // Darnell Paul S. // Bell Telephone Labor Inc | ||||
| PDF File 2149328.pdf | 666 kB | Shaun Ewing | Mar 07, 1939 00:00 |
|
US-2149328-A // Space discharge type of apparatus // Aiken Charles B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 666 kB | Shaun Ewing | Mar 07, 1939 00:00 | US-2149328-A // Space discharge type of apparatus // Aiken Charles B. // Bell Telephone Labor Inc | ||||
| PDF File 2148598.pdf | 409 kB | Shaun Ewing | Feb 28, 1939 00:00 |
|
US-2148598-A // Relay // Zupa Frank A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 409 kB | Shaun Ewing | Feb 28, 1939 00:00 | US-2148598-A // Relay // Zupa Frank A. // Bell Telephone Labor Inc | ||||
| PDF File 2148578.pdf | 580 kB | Shaun Ewing | Feb 28, 1939 00:00 |
|
US-2148578-A // Signaling system // Pullis George A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 580 kB | Shaun Ewing | Feb 28, 1939 00:00 | US-2148578-A // Signaling system // Pullis George A. // Bell Telephone Labor Inc | ||||
| PDF File 2148562.pdf | 291 kB | Shaun Ewing | Feb 28, 1939 00:00 |
|
US-2148562-A // Alloys // Kingsbury Edwin F. ; Reeve Howard T. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 291 kB | Shaun Ewing | Feb 28, 1939 00:00 | US-2148562-A // Alloys // Kingsbury Edwin F. ; Reeve Howard T. // Bell Telephone Labor Inc | ||||
| PDF File 2148560.pdf | 247 kB | Shaun Ewing | Feb 28, 1939 00:00 |
|
US-2148560-A // Signaling system // Johnston Donald F. ; Shiel John B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 247 kB | Shaun Ewing | Feb 28, 1939 00:00 | US-2148560-A // Signaling system // Johnston Donald F. ; Shiel John B. // Bell Telephone Labor Inc | ||||
| PDF File 2148542.pdf | 298 kB | Shaun Ewing | Feb 28, 1939 00:00 |
|
US-2148542-A // Fuse // Dietz Alfred E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 298 kB | Shaun Ewing | Feb 28, 1939 00:00 | US-2148542-A // Fuse // Dietz Alfred E. // Bell Telephone Labor Inc | ||||
| PDF File 2148538.pdf | 1.01 MB | Shaun Ewing | Feb 28, 1939 00:00 |
|
US-2148538-A // Electron discharge device // Depew Charles ; Ronci Victor L. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.01 MB | Shaun Ewing | Feb 28, 1939 00:00 | US-2148538-A // Electron discharge device // Depew Charles ; Ronci Victor L. // Bell Telephone Labor Inc | ||||
| PDF File 2148532.pdf | 479 kB | Shaun Ewing | Feb 28, 1939 00:00 |
|
US-2148532-A // Radio repeater // Chaffee Joseph G. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 479 kB | Shaun Ewing | Feb 28, 1939 00:00 | US-2148532-A // Radio repeater // Chaffee Joseph G. // Bell Telephone Labor Inc | ||||
| PDF File 2147729.pdf | 435 kB | Shaun Ewing | Feb 21, 1939 00:00 |
|
US-2147729-A // Electric metering device // Wurmser Alphons V. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 435 kB | Shaun Ewing | Feb 21, 1939 00:00 | US-2147729-A // Electric metering device // Wurmser Alphons V. // Bell Telephone Labor Inc | ||||
| PDF File 2147728.pdf | 611 kB | Shaun Ewing | Feb 21, 1939 00:00 |
|
US-2147728-A // Phase changer // Wintringham William T. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 611 kB | Shaun Ewing | Feb 21, 1939 00:00 | US-2147728-A // Phase changer // Wintringham William T. // Bell Telephone Labor Inc | ||||
| PDF File 2147720.pdf | 1.26 MB | Shaun Ewing | Feb 21, 1939 00:00 |
|
US-2147720-A // Telegraphic exchange circuit // Singer Fred J. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.26 MB | Shaun Ewing | Feb 21, 1939 00:00 | US-2147720-A // Telegraphic exchange circuit // Singer Fred J. // Bell Telephone Labor Inc | ||||
| PDF File 2147717.pdf | 1.93 MB | Shaun Ewing | Feb 21, 1939 00:00 |
|
US-2147717-A // Guided wave transmission // Schelkunoff Sergel A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.93 MB | Shaun Ewing | Feb 21, 1939 00:00 | US-2147717-A // Guided wave transmission // Schelkunoff Sergel A. // Bell Telephone Labor Inc | ||||
| PDF File 2147712.pdf | 742 kB | Shaun Ewing | Feb 21, 1939 00:00 |
|
US-2147712-A // Wave filter // Mason Warren P. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 742 kB | Shaun Ewing | Feb 21, 1939 00:00 | US-2147712-A // Wave filter // Mason Warren P. // Bell Telephone Labor Inc | ||||
| PDF File 2147710.pdf | 1.13 MB | Shaun Ewing | Feb 21, 1939 00:00 |
|
US-2147710-A // Call transmitter // Mallina Rudolph F. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.13 MB | Shaun Ewing | Feb 21, 1939 00:00 | US-2147710-A // Call transmitter // Mallina Rudolph F. // Bell Telephone Labor Inc | ||||
| PDF File 2147690.pdf | 888 kB | Shaun Ewing | Feb 21, 1939 00:00 |
|
US-2147690-A // Telegraph repeater // Cramer Walter W. ; Cummings George C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 888 kB | Shaun Ewing | Feb 21, 1939 00:00 | US-2147690-A // Telegraph repeater // Cramer Walter W. ; Cummings George C. // Bell Telephone Labor Inc |
