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 2143414.pdf | 300 kB | Shaun Ewing | Jan 10, 1939 00:00 |
|
US-2143414-A // Electrical device // Grisdale Richard O. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 300 kB | Shaun Ewing | Jan 10, 1939 00:00 | US-2143414-A // Electrical device // Grisdale Richard O. // Bell Telephone Labor Inc | ||||
| PDF File 2143407.pdf | 557 kB | Shaun Ewing | Jan 10, 1939 00:00 |
|
US-2143407-A // Gain control circuits // Chesnut Roy W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 557 kB | Shaun Ewing | Jan 10, 1939 00:00 | US-2143407-A // Gain control circuits // Chesnut Roy W. // Bell Telephone Labor Inc | ||||
| PDF File 2143404.pdf | 276 kB | Shaun Ewing | Jan 10, 1939 00:00 |
|
US-2143404-A // Acoustic device // Bryant Herbert W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 276 kB | Shaun Ewing | Jan 10, 1939 00:00 | US-2143404-A // Acoustic device // Bryant Herbert W. // Bell Telephone Labor Inc | ||||
| PDF File 2143163.pdf | 781 kB | Shaun Ewing | Jan 10, 1939 00:00 |
|
US-2143163-A // Carrier communication system // Monk Newton // Bell Telephone Labor Inc | |||
| Version 1 (current) | 781 kB | Shaun Ewing | Jan 10, 1939 00:00 | US-2143163-A // Carrier communication system // Monk Newton // Bell Telephone Labor Inc | ||||
| PDF File 2143056.pdf | 744 kB | Shaun Ewing | Jan 10, 1939 00:00 |
|
US-2143056-A // Transmission system // Curtis Austen M. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 744 kB | Shaun Ewing | Jan 10, 1939 00:00 | US-2143056-A // Transmission system // Curtis Austen M. // Bell Telephone Labor Inc | ||||
| PDF File 2143000.pdf | 3.96 MB | Shaun Ewing | Jan 10, 1939 00:00 |
|
US-2143000-A // Telegraph system // Cramer Walter W. ; Fitch Karl E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 3.96 MB | Shaun Ewing | Jan 10, 1939 00:00 | US-2143000-A // Telegraph system // Cramer Walter W. ; Fitch Karl E. // Bell Telephone Labor Inc | ||||
| PDF File 2142335.pdf | 1.01 MB | Shaun Ewing | Jan 03, 1939 00:00 |
|
US-2142335-A // Radio transmitter control // Scott Herbert J. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.01 MB | Shaun Ewing | Jan 03, 1939 00:00 | US-2142335-A // Radio transmitter control // Scott Herbert J. // Bell Telephone Labor Inc | ||||
| PDF File 2142331.pdf | 594 kB | Shaun Ewing | Jan 03, 1939 00:00 |
|
US-2142331-A // Electron emitting cathode // Jr. Charles H. Prescott, // Bell Telephone Labor Inc | |||
| Version 1 (current) | 594 kB | Shaun Ewing | Jan 03, 1939 00:00 | US-2142331-A // Electron emitting cathode // Jr. Charles H. Prescott, // Bell Telephone Labor Inc | ||||
| PDF File 2142316.pdf | 590 kB | Shaun Ewing | Jan 03, 1939 00:00 |
|
US-2142316-A // Multiplex multiline carrier system // Huber George H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 590 kB | Shaun Ewing | Jan 03, 1939 00:00 | US-2142316-A // Multiplex multiline carrier system // Huber George H. // Bell Telephone Labor Inc | ||||
| PDF File 2142313.pdf | 529 kB | Shaun Ewing | Jan 03, 1939 00:00 |
|
US-2142313-A // Electric oscillator // Heising Raymond A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 529 kB | Shaun Ewing | Jan 03, 1939 00:00 | US-2142313-A // Electric oscillator // Heising Raymond A. // Bell Telephone Labor Inc | ||||
| PDF File 2142138.pdf | 794 kB | Shaun Ewing | Jan 03, 1939 00:00 |
|
US-2142138-A // Guided wave transmission // Llewellyn Frederick B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 794 kB | Shaun Ewing | Jan 03, 1939 00:00 | US-2142138-A // Guided wave transmission // Llewellyn Frederick B. // Bell Telephone Labor Inc | ||||
| PDF File 2141746.pdf | 730 kB | Shaun Ewing | Dec 27, 1938 00:00 |
|
US-2141746-A // Electro-optical image producing device // Gray Frank // Bell Telephone Labor Inc | |||
| Version 1 (current) | 730 kB | Shaun Ewing | Dec 27, 1938 00:00 | US-2141746-A // Electro-optical image producing device // Gray Frank // Bell Telephone Labor Inc | ||||
| PDF File 2141420.pdf | 279 kB | Shaun Ewing | Dec 27, 1938 00:00 |
|
US-2141420-A // Acoustic device // Swickard Andrew E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 279 kB | Shaun Ewing | Dec 27, 1938 00:00 | US-2141420-A // Acoustic device // Swickard Andrew E. // Bell Telephone Labor Inc | ||||
| PDF File 2141388.pdf | 678 kB | Shaun Ewing | Dec 27, 1938 00:00 |
|
US-2141388-A // Facsimile telegraph system // Harrison Henry C. ; Pope Thomas J. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 678 kB | Shaun Ewing | Dec 27, 1938 00:00 | US-2141388-A // Facsimile telegraph system // Harrison Henry C. ; Pope Thomas J. // Bell Telephone Labor Inc | ||||
| PDF File 2141387.pdf | 807 kB | Shaun Ewing | Dec 27, 1938 00:00 |
|
US-2141387-A // Electron discharge device // Hale Douglas A. S. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 807 kB | Shaun Ewing | Dec 27, 1938 00:00 | US-2141387-A // Electron discharge device // Hale Douglas A. S. // Bell Telephone Labor Inc | ||||
| PDF File 2141378.pdf | 784 kB | Shaun Ewing | Dec 27, 1938 00:00 |
|
US-2141378-A // Electron discharge device // Clark James E. ; Ronci Victor L. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 784 kB | Shaun Ewing | Dec 27, 1938 00:00 | US-2141378-A // Electron discharge device // Clark James E. ; Ronci Victor L. // Bell Telephone Labor Inc | ||||
| PDF File 2141376.pdf | 987 kB | Shaun Ewing | Dec 27, 1938 00:00 |
|
US-2141376-A // Frequency regulation of oscillators in ultra short wave receivers // Chaffee Joseph G. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 987 kB | Shaun Ewing | Dec 27, 1938 00:00 | US-2141376-A // Frequency regulation of oscillators in ultra short wave receivers // Chaffee Joseph G. // Bell Telephone Labor Inc | ||||
| PDF File 2141373.pdf | 324 kB | Shaun Ewing | Dec 27, 1938 00:00 |
|
US-2141373-A // Electrical testing system // Blount Frank E. ; Husta Philip // Bell Telephone Labor Inc | |||
| Version 1 (current) | 324 kB | Shaun Ewing | Dec 27, 1938 00:00 | US-2141373-A // Electrical testing system // Blount Frank E. ; Husta Philip // Bell Telephone Labor Inc | ||||
| PDF File 2141372.pdf | 3.13 MB | Shaun Ewing | Dec 27, 1938 00:00 |
|
US-2141372-A // Telephone system // Baumfalk John // Bell Telephone Labor Inc | |||
| Version 1 (current) | 3.13 MB | Shaun Ewing | Dec 27, 1938 00:00 | US-2141372-A // Telephone system // Baumfalk John // Bell Telephone Labor Inc | ||||
| PDF File 2140930.pdf | 491 kB | Shaun Ewing | Dec 20, 1938 00:00 |
|
US-2140930-A // Telephone system // Welch Paul V. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 491 kB | Shaun Ewing | Dec 20, 1938 00:00 | US-2140930-A // Telephone system // Welch Paul V. // Bell Telephone Labor Inc |
