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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1804778.pdf | 1.22 MB | Shaun Ewing | May 12, 1931 00:00 |
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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 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 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 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 1804746.pdf | 426 kB | Shaun Ewing | May 12, 1931 00:00 |
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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 1804688.pdf | 885 kB | Shaun Ewing | May 12, 1931 00:00 |
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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 1804675.pdf | 1.12 MB | Shaun Ewing | May 12, 1931 00:00 |
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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 1804409.pdf | 458 kB | Shaun Ewing | May 12, 1931 00:00 |
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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 1804408.pdf | 418 kB | Shaun Ewing | May 12, 1931 00:00 |
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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 1804178.pdf | 668 kB | Shaun Ewing | May 05, 1931 00:00 |
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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 1804169.pdf | 1.43 MB | Shaun Ewing | May 05, 1931 00:00 |
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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 1804150.pdf | 2.03 MB | Shaun Ewing | May 05, 1931 00:00 |
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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 1804140.pdf | 236 kB | Shaun Ewing | May 05, 1931 00:00 |
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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 1804127.pdf | 395 kB | Shaun Ewing | May 05, 1931 00:00 |
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US-1804127-A // Speech transmission system // Stryker Norman R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 395 kB | Shaun Ewing | May 05, 1931 00:00 | US-1804127-A // Speech transmission system // Stryker Norman R. // Bell Telephone Labor Inc | ||||
| PDF File 1804126.pdf | 707 kB | Shaun Ewing | May 05, 1931 00:00 |
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US-1804126-A // Regulator system // Stoller Hugh M. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 707 kB | Shaun Ewing | May 05, 1931 00:00 | US-1804126-A // Regulator system // Stoller Hugh M. // Bell Telephone Labor Inc | ||||
| PDF File 1804087.pdf | 569 kB | Shaun Ewing | May 05, 1931 00:00 |
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US-1804087-A // Wave amplifying system // Bruce Edmond ; Friis Harald T. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 569 kB | Shaun Ewing | May 05, 1931 00:00 | US-1804087-A // Wave amplifying system // Bruce Edmond ; Friis Harald T. // Bell Telephone Labor Inc | ||||
| PDF File 1803700.pdf | 453 kB | Shaun Ewing | May 05, 1931 00:00 |
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US-1803700-A // Electrooptical system // Gray Frank // Bell Telephone Labor Inc | |||
| Version 1 (current) | 453 kB | Shaun Ewing | May 05, 1931 00:00 | US-1803700-A // Electrooptical system // Gray Frank // Bell Telephone Labor Inc | ||||
| PDF File 1802605.pdf | 850 kB | Shaun Ewing | Apr 28, 1931 00:00 |
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US-1802605-A // Method and machine for insulating cables // Kemp Archie R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 850 kB | Shaun Ewing | Apr 28, 1931 00:00 | US-1802605-A // Method and machine for insulating cables // Kemp Archie R. // Bell Telephone Labor Inc | ||||
| PDF File 1802118.pdf | 427 kB | Shaun Ewing | Apr 21, 1931 00:00 |
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US-1802118-A // Modulator and system of modulation // Llewellyn Frederick B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 427 kB | Shaun Ewing | Apr 21, 1931 00:00 | US-1802118-A // Modulator and system of modulation // Llewellyn Frederick B. // Bell Telephone Labor Inc | ||||
| PDF File 1800394.pdf | 564 kB | Shaun Ewing | Apr 14, 1931 00:00 |
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US-1800394-A // Regulating device // Lunsford Robert L. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 564 kB | Shaun Ewing | Apr 14, 1931 00:00 | US-1800394-A // Regulating device // Lunsford Robert L. // Bell Telephone Labor Inc |
