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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 2520534.pdf | 1.95 MB | Shaun Ewing | Aug 29, 1950 00:00 |
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US-2520534-A // Multiplex pulse repeater // Edson James O. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.95 MB | Shaun Ewing | Aug 29, 1950 00:00 | US-2520534-A // Multiplex pulse repeater // Edson James O. // Bell Telephone Labor Inc | ||||
| PDF File 2448581.pdf | 1.92 MB | Shaun Ewing | Sept 07, 1948 00:00 |
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US-2448581-A // Testing circuits for piezoelectric crystals // Fair Irvin E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.92 MB | Shaun Ewing | Sept 07, 1948 00:00 | US-2448581-A // Testing circuits for piezoelectric crystals // Fair Irvin E. // Bell Telephone Labor Inc | ||||
| PDF File 2438492.pdf | 1.92 MB | Shaun Ewing | Mar 30, 1948 00:00 |
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US-2438492-A // Signaling system // Bascom Henry M. ; Massonneau Robert F. ; Jr. Bernard Ostendorf, ; Rea Wilton T. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.92 MB | Shaun Ewing | Mar 30, 1948 00:00 | US-2438492-A // Signaling system // Bascom Henry M. ; Massonneau Robert F. ; Jr. Bernard Ostendorf, ; Rea Wilton T. // Bell Telephone Labor Inc | ||||
| PDF File 2472566.pdf | 1.92 MB | Shaun Ewing | Jun 07, 1949 00:00 |
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US-2472566-A // Motor control circuit // Brown John T. L. ; Jr. Charles E. Pollard, // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.92 MB | Shaun Ewing | Jun 07, 1949 00:00 | US-2472566-A // Motor control circuit // Brown John T. L. ; Jr. Charles E. Pollard, // Bell Telephone Labor Inc | ||||
| PDF File 2508052.pdf | 1.92 MB | Shaun Ewing | May 16, 1950 00:00 |
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US-2508052-A // Trouble recorder control circuit // Williford Oscar H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.92 MB | Shaun Ewing | May 16, 1950 00:00 | US-2508052-A // Trouble recorder control circuit // Williford Oscar H. // Bell Telephone Labor Inc | ||||
| PDF File 2516776.pdf | 1.91 MB | Shaun Ewing | Jul 25, 1950 00:00 |
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US-2516776-A // Electroacoustic system and means // Johnson Kenneth S. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.91 MB | Shaun Ewing | Jul 25, 1950 00:00 | US-2516776-A // Electroacoustic system and means // Johnson Kenneth S. // Bell Telephone Labor Inc | ||||
| PDF File 2400574.pdf | 1.91 MB | Shaun Ewing | May 21, 1946 00:00 |
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US-2400574-A // Start-stop receiving selector mechanism // Rea Wilton T. ; Wilkerson Jefferson R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.91 MB | Shaun Ewing | May 21, 1946 00:00 | US-2400574-A // Start-stop receiving selector mechanism // Rea Wilton T. ; Wilkerson Jefferson R. // Bell Telephone Labor Inc | ||||
| PDF File 2463248.pdf | 1.90 MB | Shaun Ewing | Mar 01, 1949 00:00 |
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US-2463248-A // Secret telegraph system // Cory Samuel I. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.90 MB | Shaun Ewing | Mar 01, 1949 00:00 | US-2463248-A // Secret telegraph system // Cory Samuel I. // Bell Telephone Labor Inc | ||||
| PDF File 2419205.pdf | 1.89 MB | Shaun Ewing | Apr 22, 1947 00:00 |
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US-2419205-A // Directive antenna system // Feldman Carl B. H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.89 MB | Shaun Ewing | Apr 22, 1947 00:00 | US-2419205-A // Directive antenna system // Feldman Carl B. H. // Bell Telephone Labor Inc | ||||
| PDF File 2506437.pdf | 1.87 MB | Shaun Ewing | May 02, 1950 00:00 |
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US-2506437-A // Combined voice and facsimile system // Watson Edward F. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.87 MB | Shaun Ewing | May 02, 1950 00:00 | US-2506437-A // Combined voice and facsimile system // Watson Edward F. // Bell Telephone Labor Inc | ||||
| PDF File 2530373.pdf | 1.86 MB | Shaun Ewing | Nov 21, 1950 00:00 |
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US-2530373-A // Ultra high frequency electronic device // Bowen Arnold E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.86 MB | Shaun Ewing | Nov 21, 1950 00:00 | US-2530373-A // Ultra high frequency electronic device // Bowen Arnold E. // Bell Telephone Labor Inc | ||||
| PDF File 2458665.pdf | 1.86 MB | Shaun Ewing | Jan 11, 1949 00:00 |
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US-2458665-A // Method of and apparatus for measuring pressure // Willard Gerald W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.86 MB | Shaun Ewing | Jan 11, 1949 00:00 | US-2458665-A // Method of and apparatus for measuring pressure // Willard Gerald W. // Bell Telephone Labor Inc | ||||
| PDF File 2393548.pdf | 1.86 MB | Shaun Ewing | Jan 22, 1946 00:00 |
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US-2393548-A // Winding machine // Mccoy Robert G. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.86 MB | Shaun Ewing | Jan 22, 1946 00:00 | US-2393548-A // Winding machine // Mccoy Robert G. // Bell Telephone Labor Inc | ||||
| PDF File 2406787.pdf | 1.86 MB | Shaun Ewing | Sept 03, 1946 00:00 |
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US-2406787-A // Telegraph system // Bacon Walter M. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.86 MB | Shaun Ewing | Sept 03, 1946 00:00 | US-2406787-A // Telegraph system // Bacon Walter M. // Bell Telephone Labor Inc | ||||
| PDF File 2437698.pdf | 1.85 MB | Shaun Ewing | Mar 16, 1948 00:00 |
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US-2437698-A // Printer and control system therefor // Lang Wilmarth Y. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.85 MB | Shaun Ewing | Mar 16, 1948 00:00 | US-2437698-A // Printer and control system therefor // Lang Wilmarth Y. // Bell Telephone Labor Inc | ||||
| PDF File 2527649.pdf | 1.85 MB | Shaun Ewing | Oct 31, 1950 00:00 |
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US-2527649-A // Synchronization of pulse transmission systems // Peterson Eugene // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.85 MB | Shaun Ewing | Oct 31, 1950 00:00 | US-2527649-A // Synchronization of pulse transmission systems // Peterson Eugene // Bell Telephone Labor Inc | ||||
| PDF File 2472715.pdf | 1.85 MB | Shaun Ewing | Jun 07, 1949 00:00 |
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US-2472715-A // Piezoelectric crystal apparatus // Mason Warren P. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.85 MB | Shaun Ewing | Jun 07, 1949 00:00 | US-2472715-A // Piezoelectric crystal apparatus // Mason Warren P. // Bell Telephone Labor Inc | ||||
| PDF File 2519670.pdf | 1.84 MB | Shaun Ewing | Aug 22, 1950 00:00 |
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US-2519670-A // Power plant charge control circuit // Langabeer Harvey T. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.84 MB | Shaun Ewing | Aug 22, 1950 00:00 | US-2519670-A // Power plant charge control circuit // Langabeer Harvey T. // Bell Telephone Labor Inc | ||||
| PDF File 2535675.pdf | 1.84 MB | Shaun Ewing | Dec 26, 1950 00:00 |
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US-2535675-A // Ringing control circuit // Goddard Myron C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.84 MB | Shaun Ewing | Dec 26, 1950 00:00 | US-2535675-A // Ringing control circuit // Goddard Myron C. // Bell Telephone Labor Inc | ||||
| PDF File 2441598.pdf | 1.82 MB | Shaun Ewing | May 18, 1948 00:00 |
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US-2441598-A // Wave transmission // Robertson Sloan D. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.82 MB | Shaun Ewing | May 18, 1948 00:00 | US-2441598-A // Wave transmission // Robertson Sloan D. // Bell Telephone Labor Inc |
