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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| 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 1840357.pdf | 2.80 MB | Shaun Ewing | Jan 12, 1932 00:00 |
|
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 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 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 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 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 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 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 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 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 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 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 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 1838027.pdf | 619 kB | Shaun Ewing | Dec 22, 1931 00:00 |
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US-1838027-A // Electrodynamic device // Clarke Harry R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 619 kB | Shaun Ewing | Dec 22, 1931 00:00 | US-1838027-A // Electrodynamic device // Clarke Harry R. // Bell Telephone Labor Inc | ||||
| PDF File 1837448.pdf | 250 kB | Shaun Ewing | Dec 22, 1931 00:00 |
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US-1837448-A // Signaling system // Krom Myron E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 250 kB | Shaun Ewing | Dec 22, 1931 00:00 | US-1837448-A // Signaling system // Krom Myron E. // Bell Telephone Labor Inc | ||||
| PDF File 1837413.pdf | 285 kB | Shaun Ewing | Dec 22, 1931 00:00 |
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US-1837413-A // Inductive coupling device // Dobson Ellsworth S. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 285 kB | Shaun Ewing | Dec 22, 1931 00:00 | US-1837413-A // Inductive coupling device // Dobson Ellsworth S. // Bell Telephone Labor Inc | ||||
| PDF File 1837385.pdf | 652 kB | Shaun Ewing | Dec 22, 1931 00:00 |
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US-1837385-A // Sound radiator // Wegel Raymond L. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 652 kB | Shaun Ewing | Dec 22, 1931 00:00 | US-1837385-A // Sound radiator // Wegel Raymond L. // Bell Telephone Labor Inc | ||||
| PDF File 1837373.pdf | 738 kB | Shaun Ewing | Dec 22, 1931 00:00 |
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US-1837373-A // Glass working machine // Ronci Victor L. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 738 kB | Shaun Ewing | Dec 22, 1931 00:00 | US-1837373-A // Glass working machine // Ronci Victor L. // Bell Telephone Labor Inc | ||||
| PDF File 1837365.pdf | 436 kB | Shaun Ewing | Dec 22, 1931 00:00 |
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US-1837365-A // Light sensitive device // Ives Herbert E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 436 kB | Shaun Ewing | Dec 22, 1931 00:00 | US-1837365-A // Light sensitive device // Ives Herbert E. // Bell Telephone Labor Inc | ||||
| PDF File 1837364.pdf | 511 kB | Shaun Ewing | Dec 22, 1931 00:00 |
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US-1837364-A // Signaling apparatus // Ives Herbert E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 511 kB | Shaun Ewing | Dec 22, 1931 00:00 | US-1837364-A // Signaling apparatus // Ives Herbert E. // Bell Telephone Labor Inc |
