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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 2248212.pdf | 1.75 MB | Shaun Ewing | Jul 08, 1941 00:00 |
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US-2248212-A // Telephone system // Albert Walter P. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.75 MB | Shaun Ewing | Jul 08, 1941 00:00 | US-2248212-A // Telephone system // Albert Walter P. // Bell Telephone Labor Inc | ||||
| PDF File 2240039.pdf | 1.74 MB | Shaun Ewing | Apr 29, 1941 00:00 |
|
US-2240039-A // Selector switch // Hickman Clarence N. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.74 MB | Shaun Ewing | Apr 29, 1941 00:00 | US-2240039-A // Selector switch // Hickman Clarence N. // Bell Telephone Labor Inc | ||||
| PDF File 2381539.pdf | 1.74 MB | Shaun Ewing | Aug 07, 1945 00:00 |
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US-2381539-A // Electron discharge device // Hartley Ralph V. L. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.74 MB | Shaun Ewing | Aug 07, 1945 00:00 | US-2381539-A // Electron discharge device // Hartley Ralph V. L. // Bell Telephone Labor Inc | ||||
| PDF File 2278460.pdf | 1.74 MB | Shaun Ewing | Apr 07, 1942 00:00 |
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US-2278460-A // Control system // Melhose Alfred E. ; Tuthill Walter W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.74 MB | Shaun Ewing | Apr 07, 1942 00:00 | US-2278460-A // Control system // Melhose Alfred E. ; Tuthill Walter W. // Bell Telephone Labor Inc | ||||
| PDF File 2342279.pdf | 1.73 MB | Shaun Ewing | Feb 22, 1944 00:00 |
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US-2342279-A // Automatic toll ticketing system // Hersey Ralph E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.73 MB | Shaun Ewing | Feb 22, 1944 00:00 | US-2342279-A // Automatic toll ticketing system // Hersey Ralph E. // Bell Telephone Labor Inc | ||||
| PDF File 2322943.pdf | 1.72 MB | Shaun Ewing | Jun 29, 1943 00:00 |
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US-2322943-A // Telegraph signal measuring apparatus // Lang Wilmarth Y. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.72 MB | Shaun Ewing | Jun 29, 1943 00:00 | US-2322943-A // Telegraph signal measuring apparatus // Lang Wilmarth Y. // Bell Telephone Labor Inc | ||||
| PDF File 2308637.pdf | 1.72 MB | Shaun Ewing | Jan 19, 1943 00:00 |
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US-2308637-A // Telephone system // Babcock Stuart M. ; Logan Mason A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.72 MB | Shaun Ewing | Jan 19, 1943 00:00 | US-2308637-A // Telephone system // Babcock Stuart M. ; Logan Mason A. // Bell Telephone Labor Inc | ||||
| PDF File 2247666.pdf | 1.71 MB | Shaun Ewing | Jul 01, 1941 00:00 |
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US-2247666-A // Directional antenna system // Potter Ralph K. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.71 MB | Shaun Ewing | Jul 01, 1941 00:00 | US-2247666-A // Directional antenna system // Potter Ralph K. // Bell Telephone Labor Inc | ||||
| PDF File 2250101.pdf | 1.70 MB | Shaun Ewing | Jul 22, 1941 00:00 |
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US-2250101-A // Telephone system // Hubbard Francis A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.70 MB | Shaun Ewing | Jul 22, 1941 00:00 | US-2250101-A // Telephone system // Hubbard Francis A. // Bell Telephone Labor Inc | ||||
| PDF File 2242878.pdf | 1.70 MB | Shaun Ewing | May 20, 1941 00:00 |
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US-2242878-A // Design of broad band repeaters // Bode Hendrik W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.70 MB | Shaun Ewing | May 20, 1941 00:00 | US-2242878-A // Design of broad band repeaters // Bode Hendrik W. // Bell Telephone Labor Inc | ||||
| PDF File 2240309.pdf | 1.69 MB | Shaun Ewing | Apr 29, 1941 00:00 |
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US-2240309-A // Piezoelectric crystal apparatus // Mason Warren P. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.69 MB | Shaun Ewing | Apr 29, 1941 00:00 | US-2240309-A // Piezoelectric crystal apparatus // Mason Warren P. // Bell Telephone Labor Inc | ||||
| PDF File 2326679.pdf | 1.69 MB | Shaun Ewing | Aug 10, 1943 00:00 |
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US-2326679-A // Party line telephone system // Retallack John B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.69 MB | Shaun Ewing | Aug 10, 1943 00:00 | US-2326679-A // Party line telephone system // Retallack John B. // Bell Telephone Labor Inc | ||||
| PDF File 2339465.pdf | 1.69 MB | Shaun Ewing | Jan 18, 1944 00:00 |
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US-2339465-A // System for the artificial production of vocal or other sounds // Dudley Homer W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.69 MB | Shaun Ewing | Jan 18, 1944 00:00 | US-2339465-A // System for the artificial production of vocal or other sounds // Dudley Homer W. // Bell Telephone Labor Inc | ||||
| PDF File 2385260.pdf | 1.68 MB | Shaun Ewing | Sept 18, 1945 00:00 |
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US-2385260-A // Crystal controlled oscillator // Cox Leslie R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.68 MB | Shaun Ewing | Sept 18, 1945 00:00 | US-2385260-A // Crystal controlled oscillator // Cox Leslie R. // Bell Telephone Labor Inc | ||||
| PDF File 2246064.pdf | 1.68 MB | Shaun Ewing | Jun 17, 1941 00:00 |
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US-2246064-A // Electrical contact protection // Rea Wilton T. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.68 MB | Shaun Ewing | Jun 17, 1941 00:00 | US-2246064-A // Electrical contact protection // Rea Wilton T. // Bell Telephone Labor Inc | ||||
| PDF File 2309467.pdf | 1.68 MB | Shaun Ewing | Jan 26, 1943 00:00 |
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US-2309467-A // Rochelle salt piezoelectric crystal apparatus // Mason Warren P. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.68 MB | Shaun Ewing | Jan 26, 1943 00:00 | US-2309467-A // Rochelle salt piezoelectric crystal apparatus // Mason Warren P. // Bell Telephone Labor Inc | ||||
| PDF File 2351766.pdf | 1.68 MB | Shaun Ewing | Jun 20, 1944 00:00 |
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US-2351766-A // Telephone system // Jr. Amos E. Joel, // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.68 MB | Shaun Ewing | Jun 20, 1944 00:00 | US-2351766-A // Telephone system // Jr. Amos E. Joel, // Bell Telephone Labor Inc | ||||
| PDF File 2353055.pdf | 1.67 MB | Shaun Ewing | Jul 04, 1944 00:00 |
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US-2353055-A // Satellite communication system // Marshall Tola A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.67 MB | Shaun Ewing | Jul 04, 1944 00:00 | US-2353055-A // Satellite communication system // Marshall Tola A. // Bell Telephone Labor Inc | ||||
| PDF File 2310452.pdf | 1.66 MB | Shaun Ewing | Feb 09, 1943 00:00 |
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US-2310452-A // Switching system // Meacham Larned A. ; Parker Carlyle V. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.66 MB | Shaun Ewing | Feb 09, 1943 00:00 | US-2310452-A // Switching system // Meacham Larned A. ; Parker Carlyle V. // Bell Telephone Labor Inc | ||||
| PDF File 2356519.pdf | 1.66 MB | Shaun Ewing | Aug 22, 1944 00:00 |
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US-2356519-A // Communication system // Hubbard Francis A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.66 MB | Shaun Ewing | Aug 22, 1944 00:00 | US-2356519-A // Communication system // Hubbard Francis A. // Bell Telephone Labor Inc |
