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 2303907.pdf | 611 kB | Shaun Ewing | Dec 01, 1942 00:00 |
|
US-2303907-A // Multichannel signal transmission // Black Harold S. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 611 kB | Shaun Ewing | Dec 01, 1942 00:00 | US-2303907-A // Multichannel signal transmission // Black Harold S. // Bell Telephone Labor Inc | ||||
| PDF File 2303564.pdf | 301 kB | Shaun Ewing | Dec 01, 1942 00:00 |
|
US-2303564-A // Alternating current generator // Lovell Clarence A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 301 kB | Shaun Ewing | Dec 01, 1942 00:00 | US-2303564-A // Alternating current generator // Lovell Clarence A. // Bell Telephone Labor Inc | ||||
| PDF File 2303555.pdf | 895 kB | Shaun Ewing | Dec 01, 1942 00:00 |
|
US-2303555-A // Hot plate device // Humphrey Robert G. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 895 kB | Shaun Ewing | Dec 01, 1942 00:00 | US-2303555-A // Hot plate device // Humphrey Robert G. // Bell Telephone Labor Inc | ||||
| PDF File 2303497.pdf | 322 kB | Shaun Ewing | Dec 01, 1942 00:00 |
|
US-2303497-A // Duplex metal body // Reeve Howard T. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 322 kB | Shaun Ewing | Dec 01, 1942 00:00 | US-2303497-A // Duplex metal body // Reeve Howard T. // Bell Telephone Labor Inc | ||||
| PDF File 2303485.pdf | 1.25 MB | Shaun Ewing | Dec 01, 1942 00:00 |
|
US-2303485-A // Bridge-stabilized oscillator for voice frequency circuits // Meacham Larned A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.25 MB | Shaun Ewing | Dec 01, 1942 00:00 | US-2303485-A // Bridge-stabilized oscillator for voice frequency circuits // Meacham Larned A. // Bell Telephone Labor Inc | ||||
| PDF File 2303474.pdf | 537 kB | Shaun Ewing | Dec 01, 1942 00:00 |
|
US-2303474-A // Electric switch // Kalb Robert M. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 537 kB | Shaun Ewing | Dec 01, 1942 00:00 | US-2303474-A // Electric switch // Kalb Robert M. // Bell Telephone Labor Inc | ||||
| PDF File 2303419.pdf | 556 kB | Shaun Ewing | Dec 01, 1942 00:00 |
|
US-2303419-A // Two-way signal transmission system // Affel Herman A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 556 kB | Shaun Ewing | Dec 01, 1942 00:00 | US-2303419-A // Two-way signal transmission system // Affel Herman A. // Bell Telephone Labor Inc | ||||
| PDF File 2303377.pdf | 775 kB | Shaun Ewing | Dec 01, 1942 00:00 |
|
US-2303377-A // Communication system with voiceoperated switching mechanisms // Melhose Alfred E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 775 kB | Shaun Ewing | Dec 01, 1942 00:00 | US-2303377-A // Communication system with voiceoperated switching mechanisms // Melhose Alfred E. // Bell Telephone Labor Inc | ||||
| PDF File 2303375.pdf | 1.56 MB | Shaun Ewing | Dec 01, 1942 00:00 |
|
US-2303375-A // Rochelle salt piezoelectric crystal apparatus // Mason Warren P. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.56 MB | Shaun Ewing | Dec 01, 1942 00:00 | US-2303375-A // Rochelle salt piezoelectric crystal apparatus // Mason Warren P. // Bell Telephone Labor Inc | ||||
| PDF File 2303356.pdf | 935 kB | Shaun Ewing | Dec 01, 1942 00:00 |
|
US-2303356-A // Selecting system // Holden William H. T. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 935 kB | Shaun Ewing | Dec 01, 1942 00:00 | US-2303356-A // Selecting system // Holden William H. T. // Bell Telephone Labor Inc | ||||
| PDF File 2303194.pdf | 355 kB | Shaun Ewing | Nov 24, 1942 00:00 |
|
US-2303194-A // Alloy // Bouton George M. ; Phipps George S. ; Schumacher Earle E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 355 kB | Shaun Ewing | Nov 24, 1942 00:00 | US-2303194-A // Alloy // Bouton George M. ; Phipps George S. ; Schumacher Earle E. // Bell Telephone Labor Inc | ||||
| PDF File 2303166.pdf | 339 kB | Shaun Ewing | Nov 24, 1942 00:00 |
|
US-2303166-A // Electron discharge device // Laico Joseph P. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 339 kB | Shaun Ewing | Nov 24, 1942 00:00 | US-2303166-A // Electron discharge device // Laico Joseph P. // Bell Telephone Labor Inc | ||||
| PDF File 2303054.pdf | 2.02 MB | Shaun Ewing | Nov 24, 1942 00:00 |
|
US-2303054-A // Polar signal test transmitter // Lang Wilmarth Y. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.02 MB | Shaun Ewing | Nov 24, 1942 00:00 | US-2303054-A // Polar signal test transmitter // Lang Wilmarth Y. // Bell Telephone Labor Inc | ||||
| PDF File 2303016.pdf | 969 kB | Shaun Ewing | Nov 24, 1942 00:00 |
|
US-2303016-A // Impulse counting circuit // Blount Frank E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 969 kB | Shaun Ewing | Nov 24, 1942 00:00 | US-2303016-A // Impulse counting circuit // Blount Frank E. // Bell Telephone Labor Inc | ||||
| PDF File 2303015.pdf | 744 kB | Shaun Ewing | Nov 24, 1942 00:00 |
|
US-2303015-A // Emergency conference circuit // Beaumont William M. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 744 kB | Shaun Ewing | Nov 24, 1942 00:00 | US-2303015-A // Emergency conference circuit // Beaumont William M. // Bell Telephone Labor Inc | ||||
| PDF File 2302587.pdf | 723 kB | Shaun Ewing | Nov 17, 1942 00:00 |
|
US-2302587-A // Telephone trunking system // Ulrich Horace W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 723 kB | Shaun Ewing | Nov 17, 1942 00:00 | US-2302587-A // Telephone trunking system // Ulrich Horace W. // Bell Telephone Labor Inc | ||||
| PDF File 2302554.pdf | 1.18 MB | Shaun Ewing | Nov 17, 1942 00:00 |
|
US-2302554-A // Radiation pyrometer // Kingsbury Edwin F. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.18 MB | Shaun Ewing | Nov 17, 1942 00:00 | US-2302554-A // Radiation pyrometer // Kingsbury Edwin F. // Bell Telephone Labor Inc | ||||
| PDF File 2302546.pdf | 872 kB | Shaun Ewing | Nov 17, 1942 00:00 |
|
US-2302546-A // Electric switch // Harrison Henry C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 872 kB | Shaun Ewing | Nov 17, 1942 00:00 | US-2302546-A // Electric switch // Harrison Henry C. // Bell Telephone Labor Inc | ||||
| PDF File 2302544.pdf | 779 kB | Shaun Ewing | Nov 17, 1942 00:00 |
|
US-2302544-A // Signaling system // Halligan Clair W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 779 kB | Shaun Ewing | Nov 17, 1942 00:00 | US-2302544-A // Signaling system // Halligan Clair W. // Bell Telephone Labor Inc | ||||
| PDF File 2302537.pdf | 491 kB | Shaun Ewing | Nov 17, 1942 00:00 |
|
US-2302537-A // Relay // Ellwood Walter B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 491 kB | Shaun Ewing | Nov 17, 1942 00:00 | US-2302537-A // Relay // Ellwood Walter B. // Bell Telephone Labor Inc |
