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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1812635.pdf | 653 kB | Shaun Ewing | Jun 30, 1931 00:00 |
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US-1812635-A // Signaling system // Knoop William A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 653 kB | Shaun Ewing | Jun 30, 1931 00:00 | US-1812635-A // Signaling system // Knoop William A. // Bell Telephone Labor Inc | ||||
| PDF File 1812828.pdf | 669 kB | Shaun Ewing | Jun 30, 1931 00:00 |
|
US-1812828-A // Switch or commutating means // Gray Frank // Bell Telephone Labor Inc | |||
| Version 1 (current) | 669 kB | Shaun Ewing | Jun 30, 1931 00:00 | US-1812828-A // Switch or commutating means // Gray Frank // Bell Telephone Labor Inc | ||||
| PDF File 1812964.pdf | 287 kB | Shaun Ewing | Jul 07, 1931 00:00 |
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US-1812964-A // Calling dial // Labaugh James M. ; Miller Victor F. // American Telephone & Telegraph ; Bell Telephone Labor Inc | |||
| Version 1 (current) | 287 kB | Shaun Ewing | Jul 07, 1931 00:00 | US-1812964-A // Calling dial // Labaugh James M. ; Miller Victor F. // American Telephone & Telegraph ; Bell Telephone Labor Inc | ||||
| PDF File 1813143.pdf | 468 kB | Shaun Ewing | Jul 07, 1931 00:00 |
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US-1813143-A // Aerial system // Bruce Edmond // Bell Telephone Labor Inc | |||
| Version 1 (current) | 468 kB | Shaun Ewing | Jul 07, 1931 00:00 | US-1813143-A // Aerial system // Bruce Edmond // Bell Telephone Labor Inc | ||||
| PDF File 1813913.pdf | 478 kB | Shaun Ewing | Jul 14, 1931 00:00 |
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US-1813913-A // Rotary distributor // Clokey Allison A. ; Knoop William A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 478 kB | Shaun Ewing | Jul 14, 1931 00:00 | US-1813913-A // Rotary distributor // Clokey Allison A. ; Knoop William A. // Bell Telephone Labor Inc | ||||
| PDF File 1813923.pdf | 527 kB | Shaun Ewing | Jul 14, 1931 00:00 |
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US-1813923-A // Radio receiving system // Heising Raymond A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 527 kB | Shaun Ewing | Jul 14, 1931 00:00 | US-1813923-A // Radio receiving system // Heising Raymond A. // Bell Telephone Labor Inc | ||||
| PDF File 1813933.pdf | 273 kB | Shaun Ewing | Jul 14, 1931 00:00 |
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US-1813933-A // Wire support // Klein Charles H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 273 kB | Shaun Ewing | Jul 14, 1931 00:00 | US-1813933-A // Wire support // Klein Charles H. // Bell Telephone Labor Inc | ||||
| PDF File 1813942.pdf | 348 kB | Shaun Ewing | Jul 14, 1931 00:00 |
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US-1813942-A // Frequency indicator // Malles Ralph E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 348 kB | Shaun Ewing | Jul 14, 1931 00:00 | US-1813942-A // Frequency indicator // Malles Ralph E. // Bell Telephone Labor Inc | ||||
| PDF File 1813969.pdf | 1.13 MB | Shaun Ewing | Jul 14, 1931 00:00 |
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US-1813969-A // Method and apparatus for measuring small time intervals // Smith Edmund B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.13 MB | Shaun Ewing | Jul 14, 1931 00:00 | US-1813969-A // Method and apparatus for measuring small time intervals // Smith Edmund B. // Bell Telephone Labor Inc | ||||
| PDF File 1814238.pdf | 1.15 MB | Shaun Ewing | Jul 14, 1931 00:00 |
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US-1814238-A // Wave filter // Bode Hendrik W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.15 MB | Shaun Ewing | Jul 14, 1931 00:00 | US-1814238-A // Wave filter // Bode Hendrik W. // Bell Telephone Labor Inc | ||||
| PDF File 1814248.pdf | 1.53 MB | Shaun Ewing | Jul 14, 1931 00:00 |
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US-1814248-A // Telephone system // Gooderham John W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.53 MB | Shaun Ewing | Jul 14, 1931 00:00 | US-1814248-A // Telephone system // Gooderham John W. // Bell Telephone Labor Inc | ||||
| PDF File 1814269.pdf | 521 kB | Shaun Ewing | Jul 14, 1931 00:00 |
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US-1814269-A // Portable talking motion picture projector // Terry Roy V. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 521 kB | Shaun Ewing | Jul 14, 1931 00:00 | US-1814269-A // Portable talking motion picture projector // Terry Roy V. // Bell Telephone Labor Inc | ||||
| PDF File 1815203.pdf | 770 kB | Shaun Ewing | Jul 21, 1931 00:00 |
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US-1815203-A // Image producing system // Ives Herbert E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 770 kB | Shaun Ewing | Jul 21, 1931 00:00 | US-1815203-A // Image producing system // Ives Herbert E. // Bell Telephone Labor Inc | ||||
| PDF File 1815212.pdf | 557 kB | Shaun Ewing | Jul 21, 1931 00:00 |
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US-1815212-A // Terminal connecter // Ogg Robert A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 557 kB | Shaun Ewing | Jul 21, 1931 00:00 | US-1815212-A // Terminal connecter // Ogg Robert A. // Bell Telephone Labor Inc | ||||
| PDF File 1815246.pdf | 478 kB | Shaun Ewing | Jul 21, 1931 00:00 |
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US-1815246-A // Radio direction finder // Englund Carl R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 478 kB | Shaun Ewing | Jul 21, 1931 00:00 | US-1815246-A // Radio direction finder // Englund Carl R. // Bell Telephone Labor Inc | ||||
| PDF File 1816558.pdf | 509 kB | Shaun Ewing | Jul 28, 1931 00:00 |
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US-1816558-A // Electromagnetic device // Zupa Frank A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 509 kB | Shaun Ewing | Jul 28, 1931 00:00 | US-1816558-A // Electromagnetic device // Zupa Frank A. // Bell Telephone Labor Inc | ||||
| PDF File 1816570.pdf | 2.76 MB | Shaun Ewing | Jul 28, 1931 00:00 |
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US-1816570-A // Testing system // Draper John B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.76 MB | Shaun Ewing | Jul 28, 1931 00:00 | US-1816570-A // Testing system // Draper John B. // Bell Telephone Labor Inc | ||||
| PDF File 1816599.pdf | 778 kB | Shaun Ewing | Jul 28, 1931 00:00 |
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US-1816599-A // Signal transmission system // Mathes Robert C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 778 kB | Shaun Ewing | Jul 28, 1931 00:00 | US-1816599-A // Signal transmission system // Mathes Robert C. // Bell Telephone Labor Inc | ||||
| PDF File 1816601.pdf | 476 kB | Shaun Ewing | Jul 28, 1931 00:00 |
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US-1816601-A // Electron discharge device // Mcneill George A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 476 kB | Shaun Ewing | Jul 28, 1931 00:00 | US-1816601-A // Electron discharge device // Mcneill George A. // Bell Telephone Labor Inc | ||||
| PDF File 1816613.pdf | 603 kB | Shaun Ewing | Jul 28, 1931 00:00 |
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US-1816613-A // Telephone system // Powell Albert C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 603 kB | Shaun Ewing | Jul 28, 1931 00:00 | US-1816613-A // Telephone system // Powell Albert C. // Bell Telephone Labor Inc |
