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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| 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 2151772.pdf | 535 kB | Shaun Ewing | Mar 28, 1939 00:00 |
|
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 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 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 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 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 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 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 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 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 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 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 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 2150386.pdf | 424 kB | Shaun Ewing | Mar 14, 1939 00:00 |
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US-2150386-A // Harmonic producer // Manley Jack M. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 424 kB | Shaun Ewing | Mar 14, 1939 00:00 | US-2150386-A // Harmonic producer // Manley Jack M. // Bell Telephone Labor Inc | ||||
| PDF File 2150364.pdf | 1.08 MB | Shaun Ewing | Mar 14, 1939 00:00 |
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US-2150364-A // Signaling system // Dudley Homer W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.08 MB | Shaun Ewing | Mar 14, 1939 00:00 | US-2150364-A // Signaling system // Dudley Homer W. // Bell Telephone Labor Inc | ||||
| PDF File 2150356.pdf | 664 kB | Shaun Ewing | Mar 14, 1939 00:00 |
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US-2150356-A // Glow discharge lamp // Bleicher Otto C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 664 kB | Shaun Ewing | Mar 14, 1939 00:00 | US-2150356-A // Glow discharge lamp // Bleicher Otto C. // Bell Telephone Labor Inc | ||||
| PDF File 2150168.pdf | 487 kB | Shaun Ewing | Mar 14, 1939 00:00 |
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US-2150168-A // Electro-optical system // Ives Herbert E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 487 kB | Shaun Ewing | Mar 14, 1939 00:00 | US-2150168-A // Electro-optical system // Ives Herbert E. // Bell Telephone Labor Inc | ||||
| PDF File 2150160.pdf | 1.10 MB | Shaun Ewing | Mar 14, 1939 00:00 |
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US-2150160-A // Electro-optical system // Gray Frank // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.10 MB | Shaun Ewing | Mar 14, 1939 00:00 | US-2150160-A // Electro-optical system // Gray Frank // Bell Telephone Labor Inc | ||||
| PDF File 2150159.pdf | 1008 kB | Shaun Ewing | Mar 14, 1939 00:00 |
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US-2150159-A // Electro-optical system // Gray Frank // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1008 kB | Shaun Ewing | Mar 14, 1939 00:00 | US-2150159-A // Electro-optical system // Gray Frank // Bell Telephone Labor Inc | ||||
| PDF File 2149372.pdf | 445 kB | Shaun Ewing | Mar 07, 1939 00:00 |
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US-2149372-A // Voltage limiter // Vaughan Henry E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 445 kB | Shaun Ewing | Mar 07, 1939 00:00 | US-2149372-A // Voltage limiter // Vaughan Henry E. // Bell Telephone Labor Inc |
