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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 2173858.pdf | 1.28 MB | Shaun Ewing | Sept 26, 1939 00:00 |
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US-2173858-A // Radio system // Pierce Norman J. ; Polkinghorn Frank A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.28 MB | Shaun Ewing | Sept 26, 1939 00:00 | US-2173858-A // Radio system // Pierce Norman J. ; Polkinghorn Frank A. // Bell Telephone Labor Inc | ||||
| PDF File 2173923.pdf | 703 kB | Shaun Ewing | Sept 26, 1939 00:00 |
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US-2173923-A // Cathode ray tube // Teal Gordon K. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 703 kB | Shaun Ewing | Sept 26, 1939 00:00 | US-2173923-A // Cathode ray tube // Teal Gordon K. // Bell Telephone Labor Inc | ||||
| PDF File 2173924.pdf | 1.81 MB | Shaun Ewing | Sept 26, 1939 00:00 |
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US-2173924-A // Telephone system // Toomey John F. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.81 MB | Shaun Ewing | Sept 26, 1939 00:00 | US-2173924-A // Telephone system // Toomey John F. // Bell Telephone Labor Inc | ||||
| PDF File 2174003.pdf | 389 kB | Shaun Ewing | Sept 26, 1939 00:00 |
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US-2174003-A // Optical device // Ives Herbert E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 389 kB | Shaun Ewing | Sept 26, 1939 00:00 | US-2174003-A // Optical device // Ives Herbert E. // Bell Telephone Labor Inc | ||||
| PDF File 2174006.pdf | 807 kB | Shaun Ewing | Sept 26, 1939 00:00 |
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US-2174006-A // Signaling system // Miller Ohmer R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 807 kB | Shaun Ewing | Sept 26, 1939 00:00 | US-2174006-A // Signaling system // Miller Ohmer R. // Bell Telephone Labor Inc | ||||
| PDF File 2174151.pdf | 1.06 MB | Shaun Ewing | Sept 26, 1939 00:00 |
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US-2174151-A // Transmission system // Bjornson Bjorn G. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.06 MB | Shaun Ewing | Sept 26, 1939 00:00 | US-2174151-A // Transmission system // Bjornson Bjorn G. // Bell Telephone Labor Inc | ||||
| PDF File 2174165.pdf | 352 kB | Shaun Ewing | Sept 26, 1939 00:00 |
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US-2174165-A // Alternating current wave production // Peterson Eugene // Bell Telephone Labor Inc | |||
| Version 1 (current) | 352 kB | Shaun Ewing | Sept 26, 1939 00:00 | US-2174165-A // Alternating current wave production // Peterson Eugene // Bell Telephone Labor Inc | ||||
| PDF File 2174221.pdf | 538 kB | Shaun Ewing | Sept 26, 1939 00:00 |
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US-2174221-A // Telegraph signaling repeater // Cramer Walter W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 538 kB | Shaun Ewing | Sept 26, 1939 00:00 | US-2174221-A // Telegraph signaling repeater // Cramer Walter W. // Bell Telephone Labor Inc | ||||
| PDF File 2174230.pdf | 300 kB | Shaun Ewing | Sept 26, 1939 00:00 |
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US-2174230-A // Holder for electrically heated tools // Shangle Amos H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 300 kB | Shaun Ewing | Sept 26, 1939 00:00 | US-2174230-A // Holder for electrically heated tools // Shangle Amos H. // Bell Telephone Labor Inc | ||||
| PDF File 2174592.pdf | 631 kB | Shaun Ewing | Oct 03, 1939 00:00 |
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US-2174592-A // Relay // Jr. Robert L. Peek, // Bell Telephone Labor Inc | |||
| Version 1 (current) | 631 kB | Shaun Ewing | Oct 03, 1939 00:00 | US-2174592-A // Relay // Jr. Robert L. Peek, // Bell Telephone Labor Inc | ||||
| PDF File 2175202.pdf | 582 kB | Shaun Ewing | Oct 10, 1939 00:00 |
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US-2175202-A // Communication system // Leibe Frank A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 582 kB | Shaun Ewing | Oct 10, 1939 00:00 | US-2175202-A // Communication system // Leibe Frank A. // Bell Telephone Labor Inc | ||||
| PDF File 2175358.pdf | 700 kB | Shaun Ewing | Oct 10, 1939 00:00 |
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US-2175358-A // Communication system // Mertz Pierre // Bell Telephone Labor Inc | |||
| Version 1 (current) | 700 kB | Shaun Ewing | Oct 10, 1939 00:00 | US-2175358-A // Communication system // Mertz Pierre // Bell Telephone Labor Inc | ||||
| PDF File 2175366.pdf | 492 kB | Shaun Ewing | Oct 10, 1939 00:00 |
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US-2175366-A // Communication system // Shetzline Roy A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 492 kB | Shaun Ewing | Oct 10, 1939 00:00 | US-2175366-A // Communication system // Shetzline Roy A. // Bell Telephone Labor Inc | ||||
| PDF File 2177256.pdf | 637 kB | Shaun Ewing | Oct 24, 1939 00:00 |
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US-2177256-A // Multichannel television system // Ives Herbert E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 637 kB | Shaun Ewing | Oct 24, 1939 00:00 | US-2177256-A // Multichannel television system // Ives Herbert E. // Bell Telephone Labor Inc | ||||
| PDF File 2178146.pdf | 471 kB | Shaun Ewing | Oct 31, 1939 00:00 |
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US-2178146-A // Piezoelectric element // Mason Warren P. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 471 kB | Shaun Ewing | Oct 31, 1939 00:00 | US-2178146-A // Piezoelectric element // Mason Warren P. // Bell Telephone Labor Inc | ||||
| PDF File 2178151.pdf | 355 kB | Shaun Ewing | Oct 31, 1939 00:00 |
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US-2178151-A // Relay contact spring // Wagar Harold N. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 355 kB | Shaun Ewing | Oct 31, 1939 00:00 | US-2178151-A // Relay contact spring // Wagar Harold N. // Bell Telephone Labor Inc | ||||
| PDF File 2178227.pdf | 763 kB | Shaun Ewing | Oct 31, 1939 00:00 |
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US-2178227-A // Photoelectric tube // Glass Myron S. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 763 kB | Shaun Ewing | Oct 31, 1939 00:00 | US-2178227-A // Photoelectric tube // Glass Myron S. // Bell Telephone Labor Inc | ||||
| PDF File 2178333.pdf | 932 kB | Shaun Ewing | Oct 31, 1939 00:00 |
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US-2178333-A // Gain control circuits // Blair Royer R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 932 kB | Shaun Ewing | Oct 31, 1939 00:00 | US-2178333-A // Gain control circuits // Blair Royer R. // Bell Telephone Labor Inc | ||||
| PDF File 2178365.pdf | 287 kB | Shaun Ewing | Oct 31, 1939 00:00 |
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US-2178365-A // Electric conductor // Brobst David R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 287 kB | Shaun Ewing | Oct 31, 1939 00:00 | US-2178365-A // Electric conductor // Brobst David R. // Bell Telephone Labor Inc | ||||
| PDF File 2178453.pdf | 873 kB | Shaun Ewing | Oct 31, 1939 00:00 |
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US-2178453-A // Coupling circuits // Leibe Frank A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 873 kB | Shaun Ewing | Oct 31, 1939 00:00 | US-2178453-A // Coupling circuits // Leibe Frank A. // Bell Telephone Labor Inc |
