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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 2249577.pdf | 778 kB | Shaun Ewing | Jul 15, 1941 00:00 |
|
US-2249577-A // Polarized relay // Jr. Robert L. Peek, // Bell Telephone Labor Inc | |||
| Version 1 (current) | 778 kB | Shaun Ewing | Jul 15, 1941 00:00 | US-2249577-A // Polarized relay // Jr. Robert L. Peek, // Bell Telephone Labor Inc | ||||
| PDF File 2249440.pdf | 637 kB | Shaun Ewing | Jul 15, 1941 00:00 |
|
US-2249440-A // Wave filter // Sykes Roger A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 637 kB | Shaun Ewing | Jul 15, 1941 00:00 | US-2249440-A // Wave filter // Sykes Roger A. // Bell Telephone Labor Inc | ||||
| PDF File 2249429.pdf | 1.52 MB | Shaun Ewing | Jul 15, 1941 00:00 |
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US-2249429-A // Teletypewriter switching system // Kinkead Fullerton S. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.52 MB | Shaun Ewing | Jul 15, 1941 00:00 | US-2249429-A // Teletypewriter switching system // Kinkead Fullerton S. // Bell Telephone Labor Inc | ||||
| PDF File 2249415.pdf | 1.51 MB | Shaun Ewing | Jul 15, 1941 00:00 |
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US-2249415-A // Wave filter // Bode Hendrik W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.51 MB | Shaun Ewing | Jul 15, 1941 00:00 | US-2249415-A // Wave filter // Bode Hendrik W. // Bell Telephone Labor Inc | ||||
| PDF File 2249362.pdf | 565 kB | Shaun Ewing | Jul 15, 1941 00:00 |
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US-2249362-A // Operator's position circuit // Irvine Frank S. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 565 kB | Shaun Ewing | Jul 15, 1941 00:00 | US-2249362-A // Operator's position circuit // Irvine Frank S. // Bell Telephone Labor Inc | ||||
| PDF File 2249323.pdf | 1.30 MB | Shaun Ewing | Jul 15, 1941 00:00 |
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US-2249323-A // Testing apparatus // Mitchell Doren // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.30 MB | Shaun Ewing | Jul 15, 1941 00:00 | US-2249323-A // Testing apparatus // Mitchell Doren // Bell Telephone Labor Inc | ||||
| PDF File 2249161.pdf | 560 kB | Shaun Ewing | Jul 15, 1941 00:00 |
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US-2249161-A // Electroacoustic device // Mott Edward E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 560 kB | Shaun Ewing | Jul 15, 1941 00:00 | US-2249161-A // Electroacoustic device // Mott Edward E. // Bell Telephone Labor Inc | ||||
| PDF File 2249160.pdf | 387 kB | Shaun Ewing | Jul 15, 1941 00:00 |
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US-2249160-A // Acoustic device // Mott Edward E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 387 kB | Shaun Ewing | Jul 15, 1941 00:00 | US-2249160-A // Acoustic device // Mott Edward E. // Bell Telephone Labor Inc | ||||
| PDF File 2249158.pdf | 793 kB | Shaun Ewing | Jul 15, 1941 00:00 |
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US-2249158-A // Electroacoustic transducer // Morrison Louis A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 793 kB | Shaun Ewing | Jul 15, 1941 00:00 | US-2249158-A // Electroacoustic transducer // Morrison Louis A. // Bell Telephone Labor Inc | ||||
| PDF File 2249156.pdf | 590 kB | Shaun Ewing | Jul 15, 1941 00:00 |
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US-2249156-A // Telephone system // Jr. Josiah L. Merrill, // Bell Telephone Labor Inc | |||
| Version 1 (current) | 590 kB | Shaun Ewing | Jul 15, 1941 00:00 | US-2249156-A // Telephone system // Jr. Josiah L. Merrill, // Bell Telephone Labor Inc | ||||
| PDF File 2249154.pdf | 405 kB | Shaun Ewing | Jul 15, 1941 00:00 |
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US-2249154-A // Telephone ringing system // Maurer Keith L. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 405 kB | Shaun Ewing | Jul 15, 1941 00:00 | US-2249154-A // Telephone ringing system // Maurer Keith L. // Bell Telephone Labor Inc | ||||
| PDF File 2249133.pdf | 683 kB | Shaun Ewing | Jul 15, 1941 00:00 |
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US-2249133-A // Automatic balancing system // Hearn Richard B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 683 kB | Shaun Ewing | Jul 15, 1941 00:00 | US-2249133-A // Automatic balancing system // Hearn Richard B. // Bell Telephone Labor Inc | ||||
| PDF File 2249131.pdf | 466 kB | Shaun Ewing | Jul 15, 1941 00:00 |
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US-2249131-A // Method of and apparatus for testing receivers // Hartmann Erhard ; Krebs Luther E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 466 kB | Shaun Ewing | Jul 15, 1941 00:00 | US-2249131-A // Method of and apparatus for testing receivers // Hartmann Erhard ; Krebs Luther E. // Bell Telephone Labor Inc | ||||
| PDF File 2249067.pdf | 974 kB | Shaun Ewing | Jul 15, 1941 00:00 |
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US-2249067-A // Telephone system // Wadsworth Paul W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 974 kB | Shaun Ewing | Jul 15, 1941 00:00 | US-2249067-A // Telephone system // Wadsworth Paul W. // Bell Telephone Labor Inc | ||||
| PDF File 2248995.pdf | 1.35 MB | Shaun Ewing | Jul 15, 1941 00:00 |
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US-2248995-A // Telephone system // Hubbard Francis A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.35 MB | Shaun Ewing | Jul 15, 1941 00:00 | US-2248995-A // Telephone system // Hubbard Francis A. // Bell Telephone Labor Inc | ||||
| PDF File 2248986.pdf | 1.15 MB | Shaun Ewing | Jul 15, 1941 00:00 |
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US-2248986-A // Electro-optical system // Gray Frank // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.15 MB | Shaun Ewing | Jul 15, 1941 00:00 | US-2248986-A // Electro-optical system // Gray Frank // Bell Telephone Labor Inc | ||||
| PDF File 2248985.pdf | 1.20 MB | Shaun Ewing | Jul 15, 1941 00:00 |
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US-2248985-A // Electro-optical apparatus // Gray Frank // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.20 MB | Shaun Ewing | Jul 15, 1941 00:00 | US-2248985-A // Electro-optical apparatus // Gray Frank // Bell Telephone Labor Inc | ||||
| PDF File 2248810.pdf | 1.05 MB | Shaun Ewing | Jul 08, 1941 00:00 |
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US-2248810-A // Telephone booth // Corso Frank S. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.05 MB | Shaun Ewing | Jul 08, 1941 00:00 | US-2248810-A // Telephone booth // Corso Frank S. // Bell Telephone Labor Inc | ||||
| PDF File 2248776.pdf | 1011 kB | Shaun Ewing | Jul 08, 1941 00:00 |
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US-2248776-A // Wave filter // Och Henry G. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1011 kB | Shaun Ewing | Jul 08, 1941 00:00 | US-2248776-A // Wave filter // Och Henry G. // Bell Telephone Labor Inc | ||||
| PDF File 2248746.pdf | 810 kB | Shaun Ewing | Jul 08, 1941 00:00 |
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US-2248746-A // Signal wave transmission system // Davis Kingsbury H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 810 kB | Shaun Ewing | Jul 08, 1941 00:00 | US-2248746-A // Signal wave transmission system // Davis Kingsbury H. // Bell Telephone Labor Inc |
