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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 2225305.pdf | 972 kB | Shaun Ewing | Dec 17, 1940 00:00 |
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US-2225305-A // Telephone system // King Gerald V. ; Swenson Paul W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 972 kB | Shaun Ewing | Dec 17, 1940 00:00 | US-2225305-A // Telephone system // King Gerald V. ; Swenson Paul W. // Bell Telephone Labor Inc | ||||
| PDF File 2225057.pdf | 417 kB | Shaun Ewing | Dec 17, 1940 00:00 |
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US-2225057-A // Light fixture for telephone booths // Kuntz Frank A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 417 kB | Shaun Ewing | Dec 17, 1940 00:00 | US-2225057-A // Light fixture for telephone booths // Kuntz Frank A. // Bell Telephone Labor Inc | ||||
| PDF File 2224696.pdf | 3.54 MB | Shaun Ewing | Dec 10, 1940 00:00 |
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US-2224696-A // Telephone system // Raymond Ralph // Bell Telephone Labor Inc | |||
| Version 1 (current) | 3.54 MB | Shaun Ewing | Dec 10, 1940 00:00 | US-2224696-A // Telephone system // Raymond Ralph // Bell Telephone Labor Inc | ||||
| PDF File 2224677.pdf | 508 kB | Shaun Ewing | Dec 10, 1940 00:00 |
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US-2224677-A // Signaling system // Hanscom Clarence D. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 508 kB | Shaun Ewing | Dec 10, 1940 00:00 | US-2224677-A // Signaling system // Hanscom Clarence D. // Bell Telephone Labor Inc | ||||
| PDF File 2224673.pdf | 518 kB | Shaun Ewing | Dec 10, 1940 00:00 |
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US-2224673-A // Amplifying system // Edson James O. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 518 kB | Shaun Ewing | Dec 10, 1940 00:00 | US-2224673-A // Amplifying system // Edson James O. // Bell Telephone Labor Inc | ||||
| PDF File 2224580.pdf | 364 kB | Shaun Ewing | Dec 10, 1940 00:00 |
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US-2224580-A // Modulation system // Wise Raymond O. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 364 kB | Shaun Ewing | Dec 10, 1940 00:00 | US-2224580-A // Modulation system // Wise Raymond O. // Bell Telephone Labor Inc | ||||
| PDF File 2224569.pdf | 1.71 MB | Shaun Ewing | Dec 10, 1940 00:00 |
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US-2224569-A // Control of transmission in two-way signaling systems // Dickleson Alton C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.71 MB | Shaun Ewing | Dec 10, 1940 00:00 | US-2224569-A // Control of transmission in two-way signaling systems // Dickleson Alton C. // Bell Telephone Labor Inc | ||||
| PDF File 2224251.pdf | 7.67 MB | Shaun Ewing | Dec 10, 1940 00:00 |
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US-2224251-A // Telephone system // Busch Aloysius J. ; Erwin Edson L. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 7.67 MB | Shaun Ewing | Dec 10, 1940 00:00 | US-2224251-A // Telephone system // Busch Aloysius J. ; Erwin Edson L. // Bell Telephone Labor Inc | ||||
| PDF File 2224183.pdf | 572 kB | Shaun Ewing | Dec 10, 1940 00:00 |
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US-2224183-A // Telegraph transmitting system // Cummings George C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 572 kB | Shaun Ewing | Dec 10, 1940 00:00 | US-2224183-A // Telegraph transmitting system // Cummings George C. // Bell Telephone Labor Inc | ||||
| PDF File 2223736.pdf | 478 kB | Shaun Ewing | Dec 03, 1940 00:00 |
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US-2223736-A // Transmission circuit // Mertz Pierre // Bell Telephone Labor Inc | |||
| Version 1 (current) | 478 kB | Shaun Ewing | Dec 03, 1940 00:00 | US-2223736-A // Transmission circuit // Mertz Pierre // Bell Telephone Labor Inc | ||||
| PDF File 2223537.pdf | 1.35 MB | Shaun Ewing | Dec 03, 1940 00:00 |
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US-2223537-A // Piezoelectric crystal apparatus // Sykes Roger A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.35 MB | Shaun Ewing | Dec 03, 1940 00:00 | US-2223537-A // Piezoelectric crystal apparatus // Sykes Roger A. // Bell Telephone Labor Inc | ||||
| PDF File 2223521.pdf | 733 kB | Shaun Ewing | Dec 03, 1940 00:00 |
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US-2223521-A // High-frequency system // Kirkpatrick William E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 733 kB | Shaun Ewing | Dec 03, 1940 00:00 | US-2223521-A // High-frequency system // Kirkpatrick William E. // Bell Telephone Labor Inc | ||||
| PDF File 2223506.pdf | 714 kB | Shaun Ewing | Dec 03, 1940 00:00 |
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US-2223506-A // Wave amplification // Black Harold S. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 714 kB | Shaun Ewing | Dec 03, 1940 00:00 | US-2223506-A // Wave amplification // Black Harold S. // Bell Telephone Labor Inc | ||||
| PDF File 2223224.pdf | 983 kB | Shaun Ewing | Nov 26, 1940 00:00 |
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US-2223224-A // Radio speed and drift indicator // Newhouse Russell C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 983 kB | Shaun Ewing | Nov 26, 1940 00:00 | US-2223224-A // Radio speed and drift indicator // Newhouse Russell C. // Bell Telephone Labor Inc | ||||
| PDF File 2223200.pdf | 449 kB | Shaun Ewing | Nov 26, 1940 00:00 |
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US-2223200-A // Telephone repeater control circuit // Augustadt Herbert W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 449 kB | Shaun Ewing | Nov 26, 1940 00:00 | US-2223200-A // Telephone repeater control circuit // Augustadt Herbert W. // Bell Telephone Labor Inc | ||||
| PDF File 2223167.pdf | 725 kB | Shaun Ewing | Nov 26, 1940 00:00 |
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US-2223167-A // Electric wave amplifier // Dickieson Alton C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 725 kB | Shaun Ewing | Nov 26, 1940 00:00 | US-2223167-A // Electric wave amplifier // Dickieson Alton C. // Bell Telephone Labor Inc | ||||
| PDF File 2223161.pdf | 731 kB | Shaun Ewing | Nov 26, 1940 00:00 |
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US-2223161-A // Negative feedback amplifier circuit // Anderson Frithiof B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 731 kB | Shaun Ewing | Nov 26, 1940 00:00 | US-2223161-A // Negative feedback amplifier circuit // Anderson Frithiof B. // Bell Telephone Labor Inc | ||||
| PDF File 2223049.pdf | 657 kB | Shaun Ewing | Nov 26, 1940 00:00 |
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US-2223049-A // Duplex radio system // Reichle Winfried E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 657 kB | Shaun Ewing | Nov 26, 1940 00:00 | US-2223049-A // Duplex radio system // Reichle Winfried E. // Bell Telephone Labor Inc | ||||
| PDF File 2222688.pdf | 528 kB | Shaun Ewing | Nov 26, 1940 00:00 |
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US-2222688-A // Vibratory frequency controlling device // Rumpel Carl H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 528 kB | Shaun Ewing | Nov 26, 1940 00:00 | US-2222688-A // Vibratory frequency controlling device // Rumpel Carl H. // Bell Telephone Labor Inc | ||||
| PDF File 2222672.pdf | 1.66 MB | Shaun Ewing | Nov 26, 1940 00:00 |
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US-2222672-A // Communication switching system // Large Wayne V. K. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.66 MB | Shaun Ewing | Nov 26, 1940 00:00 | US-2222672-A // Communication switching system // Large Wayne V. K. // Bell Telephone Labor Inc |
