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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 2131578.pdf | 417 kB | Shaun Ewing | Sept 27, 1938 00:00 |
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US-2131578-A // Monitoring circuit for telephone systems // Bachelet Albert E. ; Gibson Earl S. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 417 kB | Shaun Ewing | Sept 27, 1938 00:00 | US-2131578-A // Monitoring circuit for telephone systems // Bachelet Albert E. ; Gibson Earl S. // Bell Telephone Labor Inc | ||||
| PDF File 2131580.pdf | 918 kB | Shaun Ewing | Sept 27, 1938 00:00 |
|
US-2131580-A // Control circuits // Bjornson Bjorn G. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 918 kB | Shaun Ewing | Sept 27, 1938 00:00 | US-2131580-A // Control circuits // Bjornson Bjorn G. // Bell Telephone Labor Inc | ||||
| PDF File 2131584.pdf | 246 kB | Shaun Ewing | Sept 27, 1938 00:00 |
|
US-2131584-A // Switching device // Cruser Victor I. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 246 kB | Shaun Ewing | Sept 27, 1938 00:00 | US-2131584-A // Switching device // Cruser Victor I. // Bell Telephone Labor Inc | ||||
| PDF File 2131585.pdf | 423 kB | Shaun Ewing | Sept 27, 1938 00:00 |
|
US-2131585-A // Supply circuit // Curtis Austen M. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 423 kB | Shaun Ewing | Sept 27, 1938 00:00 | US-2131585-A // Supply circuit // Curtis Austen M. // Bell Telephone Labor Inc | ||||
| PDF File 2131589.pdf | 568 kB | Shaun Ewing | Sept 27, 1938 00:00 |
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US-2131589-A // Signaling system // Halligan Clair W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 568 kB | Shaun Ewing | Sept 27, 1938 00:00 | US-2131589-A // Signaling system // Halligan Clair W. // Bell Telephone Labor Inc | ||||
| PDF File 2131593.pdf | 320 kB | Shaun Ewing | Sept 27, 1938 00:00 |
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US-2131593-A // Acoustic device // Marshall Robert N. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 320 kB | Shaun Ewing | Sept 27, 1938 00:00 | US-2131593-A // Acoustic device // Marshall Robert N. // Bell Telephone Labor Inc | ||||
| PDF File 2131715.pdf | 880 kB | Shaun Ewing | Sept 27, 1938 00:00 |
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US-2131715-A // Electrooptical apparatus // Jr. Millard W. Baldwin, // Bell Telephone Labor Inc | |||
| Version 1 (current) | 880 kB | Shaun Ewing | Sept 27, 1938 00:00 | US-2131715-A // Electrooptical apparatus // Jr. Millard W. Baldwin, // Bell Telephone Labor Inc | ||||
| PDF File 2131870.pdf | 2.92 MB | Shaun Ewing | Oct 04, 1938 00:00 |
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US-2131870-A // Telegraph system // Cramer Walter W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.92 MB | Shaun Ewing | Oct 04, 1938 00:00 | US-2131870-A // Telegraph system // Cramer Walter W. // Bell Telephone Labor Inc | ||||
| PDF File 2132203.pdf | 254 kB | Shaun Ewing | Oct 04, 1938 00:00 |
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US-2132203-A // Electrical connecter // Clark James E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 254 kB | Shaun Ewing | Oct 04, 1938 00:00 | US-2132203-A // Electrical connecter // Clark James E. // Bell Telephone Labor Inc | ||||
| PDF File 2132205.pdf | 1.16 MB | Shaun Ewing | Oct 04, 1938 00:00 |
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US-2132205-A // Secret transmission // Dickieson Alton C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.16 MB | Shaun Ewing | Oct 04, 1938 00:00 | US-2132205-A // Secret transmission // Dickieson Alton C. // Bell Telephone Labor Inc | ||||
| PDF File 2132213.pdf | 1.32 MB | Shaun Ewing | Oct 04, 1938 00:00 |
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US-2132213-A // Recorder of liquid level heights // Locke George A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.32 MB | Shaun Ewing | Oct 04, 1938 00:00 | US-2132213-A // Recorder of liquid level heights // Locke George A. // Bell Telephone Labor Inc | ||||
| PDF File 2132214.pdf | 499 kB | Shaun Ewing | Oct 04, 1938 00:00 |
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US-2132214-A // Measuring system // Myers Oscar // Bell Telephone Labor Inc | |||
| Version 1 (current) | 499 kB | Shaun Ewing | Oct 04, 1938 00:00 | US-2132214-A // Measuring system // Myers Oscar // Bell Telephone Labor Inc | ||||
| PDF File 2132225.pdf | 271 kB | Shaun Ewing | Oct 04, 1938 00:00 |
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US-2132225-A // Timing apparatus // Subrizi Victor // Bell Telephone Labor Inc | |||
| Version 1 (current) | 271 kB | Shaun Ewing | Oct 04, 1938 00:00 | US-2132225-A // Timing apparatus // Subrizi Victor // Bell Telephone Labor Inc | ||||
| PDF File 2132241.pdf | 1.31 MB | Shaun Ewing | Oct 04, 1938 00:00 |
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US-2132241-A // Telephone system // Hovland Henry // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.31 MB | Shaun Ewing | Oct 04, 1938 00:00 | US-2132241-A // Telephone system // Hovland Henry // Bell Telephone Labor Inc | ||||
| PDF File 2132857.pdf | 940 kB | Shaun Ewing | Oct 11, 1938 00:00 |
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US-2132857-A // Telephone system // Lang Albert G. ; Neely Thomas H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 940 kB | Shaun Ewing | Oct 11, 1938 00:00 | US-2132857-A // Telephone system // Lang Albert G. ; Neely Thomas H. // Bell Telephone Labor Inc | ||||
| PDF File 2133429.pdf | 919 kB | Shaun Ewing | Oct 18, 1938 00:00 |
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US-2133429-A // Gain control circuit // Cox Leslie R. ; Terry Donald M. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 919 kB | Shaun Ewing | Oct 18, 1938 00:00 | US-2133429-A // Gain control circuit // Cox Leslie R. ; Terry Donald M. // Bell Telephone Labor Inc | ||||
| PDF File 2133434.pdf | 739 kB | Shaun Ewing | Oct 18, 1938 00:00 |
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US-2133434-A // Electric discharge device // Depew Charles ; Roncl Victor L. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 739 kB | Shaun Ewing | Oct 18, 1938 00:00 | US-2133434-A // Electric discharge device // Depew Charles ; Roncl Victor L. // Bell Telephone Labor Inc | ||||
| PDF File 2133448.pdf | 439 kB | Shaun Ewing | Oct 18, 1938 00:00 |
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US-2133448-A // Joint for electrical conductors // Harley Joseph J. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 439 kB | Shaun Ewing | Oct 18, 1938 00:00 | US-2133448-A // Joint for electrical conductors // Harley Joseph J. // Bell Telephone Labor Inc | ||||
| PDF File 2133456.pdf | 1.18 MB | Shaun Ewing | Oct 18, 1938 00:00 |
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US-2133456-A // Regenerative telegraph repeater // Kinkead Fullerton S. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.18 MB | Shaun Ewing | Oct 18, 1938 00:00 | US-2133456-A // Regenerative telegraph repeater // Kinkead Fullerton S. // Bell Telephone Labor Inc | ||||
| PDF File 2133475.pdf | 1.22 MB | Shaun Ewing | Oct 18, 1938 00:00 |
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US-2133475-A // Call transmitter // Richard Charles D. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.22 MB | Shaun Ewing | Oct 18, 1938 00:00 | US-2133475-A // Call transmitter // Richard Charles D. // Bell Telephone Labor Inc |
