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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 2150404.pdf | 267 kB | Shaun Ewing | Mar 14, 1939 00:00 |
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US-2150404-A // Wire connection // Schafer Arthur H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 267 kB | Shaun Ewing | Mar 14, 1939 00:00 | US-2150404-A // Wire connection // Schafer Arthur H. // Bell Telephone Labor Inc | ||||
| PDF File 2151083.pdf | 702 kB | Shaun Ewing | Mar 21, 1939 00:00 |
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US-2151083-A // Microphonic material // Christensen Carl J. ; Goucher Frederick S. ; Wehe Herman G. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 702 kB | Shaun Ewing | Mar 21, 1939 00:00 | US-2151083-A // Microphonic material // Christensen Carl J. ; Goucher Frederick S. ; Wehe Herman G. // Bell Telephone Labor Inc | ||||
| PDF File 2151091.pdf | 3.64 MB | Shaun Ewing | Mar 21, 1939 00:00 |
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US-2151091-A // Signal transmission // Dudley Homer W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 3.64 MB | Shaun Ewing | Mar 21, 1939 00:00 | US-2151091-A // Signal transmission // Dudley Homer W. // Bell Telephone Labor Inc | ||||
| PDF File 2151118.pdf | 1.19 MB | Shaun Ewing | Mar 21, 1939 00:00 |
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US-2151118-A // Termination for dielectric guides // King Archie P. ; Bowen Arnold E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.19 MB | Shaun Ewing | Mar 21, 1939 00:00 | US-2151118-A // Termination for dielectric guides // King Archie P. ; Bowen Arnold E. // Bell Telephone Labor Inc | ||||
| PDF File 2151157.pdf | 1.01 MB | Shaun Ewing | Mar 21, 1939 00:00 |
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US-2151157-A // Guided electromagnetic wave transmission // Schelkunoff Sergel A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.01 MB | Shaun Ewing | Mar 21, 1939 00:00 | US-2151157-A // Guided electromagnetic wave transmission // Schelkunoff Sergel A. // Bell Telephone Labor Inc | ||||
| PDF File 2151173.pdf | 332 kB | Shaun Ewing | Mar 21, 1939 00:00 |
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US-2151173-A // Carrier and speech transmission system // Whittle Horace // Bell Telephone Labor Inc | |||
| Version 1 (current) | 332 kB | Shaun Ewing | Mar 21, 1939 00:00 | US-2151173-A // Carrier and speech transmission system // Whittle Horace // Bell Telephone Labor Inc | ||||
| PDF File 2151726.pdf | 392 kB | Shaun Ewing | Mar 28, 1939 00:00 |
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US-2151726-A // Signaling device // Allen Lawrence H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 392 kB | Shaun Ewing | Mar 28, 1939 00:00 | US-2151726-A // Signaling device // Allen Lawrence H. // Bell Telephone Labor Inc | ||||
| PDF File 2151736.pdf | 705 kB | Shaun Ewing | Mar 28, 1939 00:00 |
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US-2151736-A // Piezoelectric apparatus // Broughton William W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 705 kB | Shaun Ewing | Mar 28, 1939 00:00 | US-2151736-A // Piezoelectric apparatus // Broughton William W. // Bell Telephone Labor Inc | ||||
| PDF File 2151751.pdf | 311 kB | Shaun Ewing | Mar 28, 1939 00:00 |
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US-2151751-A // Housing // Dring Arthur W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 311 kB | Shaun Ewing | Mar 28, 1939 00:00 | US-2151751-A // Housing // Dring Arthur W. // Bell Telephone Labor Inc | ||||
| PDF File 2151754.pdf | 1.37 MB | Shaun Ewing | Mar 28, 1939 00:00 |
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US-2151754-A // Oscillation generator // Fair Irvin E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.37 MB | Shaun Ewing | Mar 28, 1939 00:00 | US-2151754-A // Oscillation generator // Fair Irvin E. // Bell Telephone Labor Inc | ||||
| PDF File 2151767.pdf | 1.19 MB | Shaun Ewing | Mar 28, 1939 00:00 |
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US-2151767-A // Telephone system // Hovland Henry // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.19 MB | Shaun Ewing | Mar 28, 1939 00:00 | US-2151767-A // Telephone system // Hovland Henry // Bell Telephone Labor Inc | ||||
| PDF File 2151772.pdf | 535 kB | Shaun Ewing | Mar 28, 1939 00:00 |
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US-2151772-A // Telegraph line circuit // Kinkead Fullerton S. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 535 kB | Shaun Ewing | Mar 28, 1939 00:00 | US-2151772-A // Telegraph line circuit // Kinkead Fullerton S. // Bell Telephone Labor Inc | ||||
| PDF File 2151797.pdf | 538 kB | Shaun Ewing | Mar 28, 1939 00:00 |
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US-2151797-A // Photoelectric tube // Jr. Charles H. Prescott, // Bell Telephone Labor Inc | |||
| Version 1 (current) | 538 kB | Shaun Ewing | Mar 28, 1939 00:00 | US-2151797-A // Photoelectric tube // Jr. Charles H. Prescott, // Bell Telephone Labor Inc | ||||
| PDF File 2151821.pdf | 531 kB | Shaun Ewing | Mar 28, 1939 00:00 |
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US-2151821-A // Transmission regulation // Wilson Ira G. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 531 kB | Shaun Ewing | Mar 28, 1939 00:00 | US-2151821-A // Transmission regulation // Wilson Ira G. // Bell Telephone Labor Inc | ||||
| PDF File 2152475.pdf | 541 kB | Shaun Ewing | Mar 28, 1939 00:00 |
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US-2152475-A // Signaling system // Halligan Clair W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 541 kB | Shaun Ewing | Mar 28, 1939 00:00 | US-2152475-A // Signaling system // Halligan Clair W. // Bell Telephone Labor Inc | ||||
| PDF File 2152704.pdf | 622 kB | Shaun Ewing | Apr 04, 1939 00:00 |
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US-2152704-A // Electric switch // Massonneau Robert F. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 622 kB | Shaun Ewing | Apr 04, 1939 00:00 | US-2152704-A // Electric switch // Massonneau Robert F. // Bell Telephone Labor Inc | ||||
| PDF File 2152706.pdf | 757 kB | Shaun Ewing | Apr 04, 1939 00:00 |
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US-2152706-A // Shielding for electrical circuits // Mougey Wilbur E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 757 kB | Shaun Ewing | Apr 04, 1939 00:00 | US-2152706-A // Shielding for electrical circuits // Mougey Wilbur E. // Bell Telephone Labor Inc | ||||
| PDF File 2152709.pdf | 907 kB | Shaun Ewing | Apr 04, 1939 00:00 |
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US-2152709-A // Indicating and measuring circuits // Schott Lionel // Bell Telephone Labor Inc | |||
| Version 1 (current) | 907 kB | Shaun Ewing | Apr 04, 1939 00:00 | US-2152709-A // Indicating and measuring circuits // Schott Lionel // Bell Telephone Labor Inc | ||||
| PDF File 2152764.pdf | 442 kB | Shaun Ewing | Apr 04, 1939 00:00 |
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US-2152764-A // Controlling or keying arrangement // King Kenneth L. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 442 kB | Shaun Ewing | Apr 04, 1939 00:00 | US-2152764-A // Controlling or keying arrangement // King Kenneth L. // Bell Telephone Labor Inc | ||||
| PDF File 2152769.pdf | 1.95 MB | Shaun Ewing | Apr 04, 1939 00:00 |
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US-2152769-A // Telephone system // Newby Neal D. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.95 MB | Shaun Ewing | Apr 04, 1939 00:00 | US-2152769-A // Telephone system // Newby Neal D. // Bell Telephone Labor Inc |
