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 1804140.pdf | 236 kB | Shaun Ewing | May 05, 1931 00:00 |
|
US-1804140-A // Clamping device // Barry Joseph F. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 236 kB | Shaun Ewing | May 05, 1931 00:00 | US-1804140-A // Clamping device // Barry Joseph F. // Bell Telephone Labor Inc | ||||
| PDF File 1804150.pdf | 2.03 MB | Shaun Ewing | May 05, 1931 00:00 |
|
US-1804150-A // Telephone exchange system // Collis Raymond E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.03 MB | Shaun Ewing | May 05, 1931 00:00 | US-1804150-A // Telephone exchange system // Collis Raymond E. // Bell Telephone Labor Inc | ||||
| PDF File 1804169.pdf | 1.43 MB | Shaun Ewing | May 05, 1931 00:00 |
|
US-1804169-A // Telephone exchange system // Knowlton Alfred D. ; Everett Samuel H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.43 MB | Shaun Ewing | May 05, 1931 00:00 | US-1804169-A // Telephone exchange system // Knowlton Alfred D. ; Everett Samuel H. // Bell Telephone Labor Inc | ||||
| PDF File 1804178.pdf | 668 kB | Shaun Ewing | May 05, 1931 00:00 |
|
US-1804178-A // Regulator system // Morton Edmund R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 668 kB | Shaun Ewing | May 05, 1931 00:00 | US-1804178-A // Regulator system // Morton Edmund R. // Bell Telephone Labor Inc | ||||
| PDF File 1804408.pdf | 418 kB | Shaun Ewing | May 12, 1931 00:00 |
|
US-1804408-A // Telephone exchange system // Fowler Clarence B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 418 kB | Shaun Ewing | May 12, 1931 00:00 | US-1804408-A // Telephone exchange system // Fowler Clarence B. // Bell Telephone Labor Inc | ||||
| PDF File 1804409.pdf | 458 kB | Shaun Ewing | May 12, 1931 00:00 |
|
US-1804409-A // Telephone exchange system // Fowler Clarence B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 458 kB | Shaun Ewing | May 12, 1931 00:00 | US-1804409-A // Telephone exchange system // Fowler Clarence B. // Bell Telephone Labor Inc | ||||
| PDF File 1804675.pdf | 1.12 MB | Shaun Ewing | May 12, 1931 00:00 |
|
US-1804675-A // Signaling system // Clausen Henry P. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.12 MB | Shaun Ewing | May 12, 1931 00:00 | US-1804675-A // Signaling system // Clausen Henry P. // Bell Telephone Labor Inc | ||||
| PDF File 1804688.pdf | 885 kB | Shaun Ewing | May 12, 1931 00:00 |
|
US-1804688-A // Acoustic device // Harrison Henry C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 885 kB | Shaun Ewing | May 12, 1931 00:00 | US-1804688-A // Acoustic device // Harrison Henry C. // Bell Telephone Labor Inc | ||||
| PDF File 1804746.pdf | 426 kB | Shaun Ewing | May 12, 1931 00:00 |
|
US-1804746-A // High speed relay // Curtis Austen M. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 426 kB | Shaun Ewing | May 12, 1931 00:00 | US-1804746-A // High speed relay // Curtis Austen M. // Bell Telephone Labor Inc | ||||
| PDF File 1804759.pdf | 441 kB | Shaun Ewing | May 12, 1931 00:00 |
|
US-1804759-A // Acoustic device // Flanders Paul B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 441 kB | Shaun Ewing | May 12, 1931 00:00 | US-1804759-A // Acoustic device // Flanders Paul B. // Bell Telephone Labor Inc | ||||
| PDF File 1804766.pdf | 1.05 MB | Shaun Ewing | May 12, 1931 00:00 |
|
US-1804766-A // Telephone system // Hague Alfred E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.05 MB | Shaun Ewing | May 12, 1931 00:00 | US-1804766-A // Telephone system // Hague Alfred E. // Bell Telephone Labor Inc | ||||
| PDF File 1804767.pdf | 1010 kB | Shaun Ewing | May 12, 1931 00:00 |
|
US-1804767-A // Telephone system // Hague Alfred E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1010 kB | Shaun Ewing | May 12, 1931 00:00 | US-1804767-A // Telephone system // Hague Alfred E. // Bell Telephone Labor Inc | ||||
| PDF File 1804778.pdf | 1.22 MB | Shaun Ewing | May 12, 1931 00:00 |
|
US-1804778-A // Telephone system // Johnson Lewis H. ; Stokely Ray L. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.22 MB | Shaun Ewing | May 12, 1931 00:00 | US-1804778-A // Telephone system // Johnson Lewis H. ; Stokely Ray L. // Bell Telephone Labor Inc | ||||
| PDF File 1804786.pdf | 1.49 MB | Shaun Ewing | May 12, 1931 00:00 |
|
US-1804786-A // Telephone testing system // Kuhn Walter // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.49 MB | Shaun Ewing | May 12, 1931 00:00 | US-1804786-A // Telephone testing system // Kuhn Walter // Bell Telephone Labor Inc | ||||
| PDF File 1804809.pdf | 439 kB | Shaun Ewing | May 12, 1931 00:00 |
|
US-1804809-A // Vacuum cleaner apparatus // Pritchard William T. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 439 kB | Shaun Ewing | May 12, 1931 00:00 | US-1804809-A // Vacuum cleaner apparatus // Pritchard William T. // Bell Telephone Labor Inc | ||||
| PDF File 1804952.pdf | 903 kB | Shaun Ewing | May 12, 1931 00:00 |
|
US-1804952-A // Wave signaling system // Rettenmeyer Francis X. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 903 kB | Shaun Ewing | May 12, 1931 00:00 | US-1804952-A // Wave signaling system // Rettenmeyer Francis X. // Bell Telephone Labor Inc | ||||
| PDF File 1805229.pdf | 567 kB | Shaun Ewing | May 12, 1931 00:00 |
|
US-1805229-A // Variable electrical apparatus // Atwood George F. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 567 kB | Shaun Ewing | May 12, 1931 00:00 | US-1805229-A // Variable electrical apparatus // Atwood George F. // Bell Telephone Labor Inc | ||||
| PDF File 1808137.pdf | 921 kB | Shaun Ewing | Jun 02, 1931 00:00 |
|
US-1808137-A // Electrooptical system // Hartley Ralph V. L. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 921 kB | Shaun Ewing | Jun 02, 1931 00:00 | US-1808137-A // Electrooptical system // Hartley Ralph V. L. // Bell Telephone Labor Inc | ||||
| PDF File 1808520.pdf | 538 kB | Shaun Ewing | Jun 02, 1931 00:00 |
|
US-1808520-A // Insulated conductor // Brobst David R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 538 kB | Shaun Ewing | Jun 02, 1931 00:00 | US-1808520-A // Insulated conductor // Brobst David R. // Bell Telephone Labor Inc | ||||
| PDF File 1808527.pdf | 3.05 MB | Shaun Ewing | Jun 02, 1931 00:00 |
|
US-1808527-A // Automatic telephone exchange system // Carpenter Warren W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 3.05 MB | Shaun Ewing | Jun 02, 1931 00:00 | US-1808527-A // Automatic telephone exchange system // Carpenter Warren W. // Bell Telephone Labor Inc |
