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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 2228266.pdf | 463 kB | Shaun Ewing | Jan 14, 1941 00:00 |
|
US-2228266-A // Signal translating apparatus // Gray Frank // Bell Telephone Labor Inc | |||
| Version 1 (current) | 463 kB | Shaun Ewing | Jan 14, 1941 00:00 | US-2228266-A // Signal translating apparatus // Gray Frank // Bell Telephone Labor Inc | ||||
| PDF File 2228113.pdf | 502 kB | Shaun Ewing | Jan 07, 1941 00:00 |
|
US-2228113-A // Selective system // Hersey Ralph E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 502 kB | Shaun Ewing | Jan 07, 1941 00:00 | US-2228113-A // Selective system // Hersey Ralph E. // Bell Telephone Labor Inc | ||||
| PDF File 2228071.pdf | 1.39 MB | Shaun Ewing | Jan 07, 1941 00:00 |
|
US-2228071-A // Volume control circuits // Bjornson Bjorn G. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.39 MB | Shaun Ewing | Jan 07, 1941 00:00 | US-2228071-A // Volume control circuits // Bjornson Bjorn G. // Bell Telephone Labor Inc | ||||
| PDF File 2227909.pdf | 377 kB | Shaun Ewing | Jan 07, 1941 00:00 |
|
US-2227909-A // Electron discharge apparatus // Ohl Russell S. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 377 kB | Shaun Ewing | Jan 07, 1941 00:00 | US-2227909-A // Electron discharge apparatus // Ohl Russell S. // Bell Telephone Labor Inc | ||||
| PDF File 2227904.pdf | 1.94 MB | Shaun Ewing | Jan 07, 1941 00:00 |
|
US-2227904-A // Piezoelectric crystal apparatus // Hight Stuart C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.94 MB | Shaun Ewing | Jan 07, 1941 00:00 | US-2227904-A // Piezoelectric crystal apparatus // Hight Stuart C. // Bell Telephone Labor Inc | ||||
| PDF File 2227580.pdf | 905 kB | Shaun Ewing | Jan 07, 1941 00:00 |
|
US-2227580-A // Acoustic device // Harry William R. ; Marshall Robert N. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 905 kB | Shaun Ewing | Jan 07, 1941 00:00 | US-2227580-A // Acoustic device // Harry William R. ; Marshall Robert N. // Bell Telephone Labor Inc | ||||
| PDF File 2227488.pdf | 2.05 MB | Shaun Ewing | Jan 07, 1941 00:00 |
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US-2227488-A // Telephone system // Collis Raymond E. ; Dehn Joseph W. ; Hersey Ralph E. ; Newsom James B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.05 MB | Shaun Ewing | Jan 07, 1941 00:00 | US-2227488-A // Telephone system // Collis Raymond E. ; Dehn Joseph W. ; Hersey Ralph E. ; Newsom James B. // Bell Telephone Labor Inc | ||||
| PDF File 2227487.pdf | 411 kB | Shaun Ewing | Jan 07, 1941 00:00 |
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US-2227487-A // Concentric line coupling // Chaffee Joseph G. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 411 kB | Shaun Ewing | Jan 07, 1941 00:00 | US-2227487-A // Concentric line coupling // Chaffee Joseph G. // Bell Telephone Labor Inc |
