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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1840015.pdf | 1.22 MB | Shaun Ewing | Jan 05, 1932 00:00 |
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US-1840015-A // Transmission control circuit // Bjornson Bjorn G. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.22 MB | Shaun Ewing | Jan 05, 1932 00:00 | US-1840015-A // Transmission control circuit // Bjornson Bjorn G. // Bell Telephone Labor Inc | ||||
| PDF File 1840090.pdf | 694 kB | Shaun Ewing | Jan 05, 1932 00:00 |
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US-1840090-A // Impulse circuit // Goodrum Charles L. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 694 kB | Shaun Ewing | Jan 05, 1932 00:00 | US-1840090-A // Impulse circuit // Goodrum Charles L. // Bell Telephone Labor Inc | ||||
| PDF File 1840097.pdf | 633 kB | Shaun Ewing | Jan 05, 1932 00:00 |
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US-1840097-A // Impulse circuit // Hinrichsen Edward E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 633 kB | Shaun Ewing | Jan 05, 1932 00:00 | US-1840097-A // Impulse circuit // Hinrichsen Edward E. // Bell Telephone Labor Inc | ||||
| PDF File 1840109.pdf | 2.70 MB | Shaun Ewing | Jan 05, 1932 00:00 |
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US-1840109-A // Telephone system // Koechling Charles D. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.70 MB | Shaun Ewing | Jan 05, 1932 00:00 | US-1840109-A // Telephone system // Koechling Charles D. // Bell Telephone Labor Inc | ||||
| PDF File 1840112.pdf | 415 kB | Shaun Ewing | Jan 05, 1932 00:00 |
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US-1840112-A // Artificial larynx // Lane Clarence E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 415 kB | Shaun Ewing | Jan 05, 1932 00:00 | US-1840112-A // Artificial larynx // Lane Clarence E. // Bell Telephone Labor Inc | ||||
| PDF File 1840116.pdf | 605 kB | Shaun Ewing | Jan 05, 1932 00:00 |
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US-1840116-A // Switch cleaning device // Linton Grant ; Townsend John R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 605 kB | Shaun Ewing | Jan 05, 1932 00:00 | US-1840116-A // Switch cleaning device // Linton Grant ; Townsend John R. // Bell Telephone Labor Inc | ||||
| PDF File 1840132.pdf | 8.12 MB | Shaun Ewing | Jan 05, 1932 00:00 |
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US-1840132-A // Telephone system // Roberts Thomas H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 8.12 MB | Shaun Ewing | Jan 05, 1932 00:00 | US-1840132-A // Telephone system // Roberts Thomas H. // Bell Telephone Labor Inc | ||||
| PDF File 1840144.pdf | 520 kB | Shaun Ewing | Jan 05, 1932 00:00 |
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US-1840144-A // Coin collector // Wheeler Clyde H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 520 kB | Shaun Ewing | Jan 05, 1932 00:00 | US-1840144-A // Coin collector // Wheeler Clyde H. // Bell Telephone Labor Inc | ||||
| PDF File 1840350.pdf | 393 kB | Shaun Ewing | Jan 12, 1932 00:00 |
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US-1840350-A // Radiofrequency amplifier // Ceccarini Olindo O. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 393 kB | Shaun Ewing | Jan 12, 1932 00:00 | US-1840350-A // Radiofrequency amplifier // Ceccarini Olindo O. // Bell Telephone Labor Inc | ||||
| PDF File 1840352.pdf | 415 kB | Shaun Ewing | Jan 12, 1932 00:00 |
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US-1840352-A // Process of producing magnetic bodies // Elmen Gustaf W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 415 kB | Shaun Ewing | Jan 12, 1932 00:00 | US-1840352-A // Process of producing magnetic bodies // Elmen Gustaf W. // Bell Telephone Labor Inc | ||||
| PDF File 1840356.pdf | 2.93 MB | Shaun Ewing | Jan 12, 1932 00:00 |
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US-1840356-A // Automatic telephone exchange system // Goodrum Charles L. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.93 MB | Shaun Ewing | Jan 12, 1932 00:00 | US-1840356-A // Automatic telephone exchange system // Goodrum Charles L. // Bell Telephone Labor Inc | ||||
| PDF File 1840357.pdf | 2.80 MB | Shaun Ewing | Jan 12, 1932 00:00 |
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US-1840357-A // Panel dial switching system // Goodrum Charles L. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.80 MB | Shaun Ewing | Jan 12, 1932 00:00 | US-1840357-A // Panel dial switching system // Goodrum Charles L. // Bell Telephone Labor Inc | ||||
| PDF File 1840364.pdf | 3.25 MB | Shaun Ewing | Jan 12, 1932 00:00 |
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US-1840364-A // Telephone dial system // Irvine Frank S. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 3.25 MB | Shaun Ewing | Jan 12, 1932 00:00 | US-1840364-A // Telephone dial system // Irvine Frank S. // Bell Telephone Labor Inc | ||||
| PDF File 1840368.pdf | 351 kB | Shaun Ewing | Jan 12, 1932 00:00 |
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US-1840368-A // Telephone exchange system // Porter Leslie F. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 351 kB | Shaun Ewing | Jan 12, 1932 00:00 | US-1840368-A // Telephone exchange system // Porter Leslie F. // Bell Telephone Labor Inc | ||||
| PDF File 1840376.pdf | 490 kB | Shaun Ewing | Jan 12, 1932 00:00 |
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US-1840376-A // Telephone system // Whitney Wiley // Bell Telephone Labor Inc | |||
| Version 1 (current) | 490 kB | Shaun Ewing | Jan 12, 1932 00:00 | US-1840376-A // Telephone system // Whitney Wiley // Bell Telephone Labor Inc | ||||
| PDF File 1840580.pdf | 314 kB | Shaun Ewing | Jan 12, 1932 00:00 |
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US-1840580-A // Crystal-controlled oscillator // Heising Raymond A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 314 kB | Shaun Ewing | Jan 12, 1932 00:00 | US-1840580-A // Crystal-controlled oscillator // Heising Raymond A. // Bell Telephone Labor Inc | ||||
| PDF File 1841084.pdf | 996 kB | Shaun Ewing | Jan 12, 1932 00:00 |
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US-1841084-A // Telephone system // Bragg Herbert E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 996 kB | Shaun Ewing | Jan 12, 1932 00:00 | US-1841084-A // Telephone system // Bragg Herbert E. // Bell Telephone Labor Inc | ||||
| PDF File 1841085.pdf | 695 kB | Shaun Ewing | Jan 12, 1932 00:00 |
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US-1841085-A // Unidirectional antenna system // Bruce Edmond // Bell Telephone Labor Inc | |||
| Version 1 (current) | 695 kB | Shaun Ewing | Jan 12, 1932 00:00 | US-1841085-A // Unidirectional antenna system // Bruce Edmond // Bell Telephone Labor Inc | ||||
| PDF File 1841088.pdf | 651 kB | Shaun Ewing | Jan 12, 1932 00:00 |
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US-1841088-A // Electrical testing system and method // Christopher Arthur J. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 651 kB | Shaun Ewing | Jan 12, 1932 00:00 | US-1841088-A // Electrical testing system and method // Christopher Arthur J. // Bell Telephone Labor Inc | ||||
| PDF File 1841093.pdf | 2.66 MB | Shaun Ewing | Jan 12, 1932 00:00 |
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US-1841093-A // Call distributing system // Dahl Jack F. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.66 MB | Shaun Ewing | Jan 12, 1932 00:00 | US-1841093-A // Call distributing system // Dahl Jack F. // Bell Telephone Labor Inc |
