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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 2617959.pdf | 1.09 MB | Shaun Ewing | Nov 11, 1952 00:00 |
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US-2617959-A // Electron discharge device // Fay Clifford E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.09 MB | Shaun Ewing | Nov 11, 1952 00:00 | US-2617959-A // Electron discharge device // Fay Clifford E. // Bell Telephone Labor Inc | ||||
| PDF File 2617980.pdf | 1.12 MB | Shaun Ewing | Nov 11, 1952 00:00 |
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US-2617980-A // Coder for pulse code modulation systems // Gray Frank // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.12 MB | Shaun Ewing | Nov 11, 1952 00:00 | US-2617980-A // Coder for pulse code modulation systems // Gray Frank // Bell Telephone Labor Inc | ||||
| PDF File 2617981.pdf | 664 kB | Shaun Ewing | Nov 11, 1952 00:00 |
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US-2617981-A // Coder for pulse code modulation systems // Gray Frank // Bell Telephone Labor Inc | |||
| Version 1 (current) | 664 kB | Shaun Ewing | Nov 11, 1952 00:00 | US-2617981-A // Coder for pulse code modulation systems // Gray Frank // Bell Telephone Labor Inc | ||||
| PDF File 2618686.pdf | 1.01 MB | Shaun Ewing | Nov 18, 1952 00:00 |
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US-2618686-A // Distortion indicator // Lange Owen E. De // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.01 MB | Shaun Ewing | Nov 18, 1952 00:00 | US-2618686-A // Distortion indicator // Lange Owen E. De // Bell Telephone Labor Inc | ||||
| PDF File 2618767.pdf | 683 kB | Shaun Ewing | Nov 18, 1952 00:00 |
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US-2618767-A // Multicathode gaseous discharge device // Gugelberg Hans L. Von // Bell Telephone Labor Inc | |||
| Version 1 (current) | 683 kB | Shaun Ewing | Nov 18, 1952 00:00 | US-2618767-A // Multicathode gaseous discharge device // Gugelberg Hans L. Von // Bell Telephone Labor Inc | ||||
| PDF File 2619178.pdf | 1.48 MB | Shaun Ewing | Nov 25, 1952 00:00 |
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US-2619178-A // Precautionary circuit // Eppel Simeon L. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.48 MB | Shaun Ewing | Nov 25, 1952 00:00 | US-2619178-A // Precautionary circuit // Eppel Simeon L. // Bell Telephone Labor Inc | ||||
| PDF File 2619414.pdf | 598 kB | Shaun Ewing | Nov 25, 1952 00:00 |
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US-2619414-A // Surface treatment of germanium circuit elements // Heidenreich Robert D. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 598 kB | Shaun Ewing | Nov 25, 1952 00:00 | US-2619414-A // Surface treatment of germanium circuit elements // Heidenreich Robert D. // Bell Telephone Labor Inc | ||||
| PDF File 2619518.pdf | 392 kB | Shaun Ewing | Nov 25, 1952 00:00 |
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US-2619518-A // Cable terminal // Kelsay Le Roy W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 392 kB | Shaun Ewing | Nov 25, 1952 00:00 | US-2619518-A // Cable terminal // Kelsay Le Roy W. // Bell Telephone Labor Inc | ||||
| PDF File 2619528.pdf | 1.06 MB | Shaun Ewing | Nov 25, 1952 00:00 |
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US-2619528-A // Selective signaling system // Vroom Edward // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.06 MB | Shaun Ewing | Nov 25, 1952 00:00 | US-2619528-A // Selective signaling system // Vroom Edward // Bell Telephone Labor Inc | ||||
| PDF File 2619543.pdf | 1.02 MB | Shaun Ewing | Nov 25, 1952 00:00 |
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US-2619543-A // Frequency changing pulse repeater employing phase modulation // Cutler Cassius C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.02 MB | Shaun Ewing | Nov 25, 1952 00:00 | US-2619543-A // Frequency changing pulse repeater employing phase modulation // Cutler Cassius C. // Bell Telephone Labor Inc | ||||
| PDF File 2619545.pdf | 1.54 MB | Shaun Ewing | Nov 25, 1952 00:00 |
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US-2619545-A // Telephone calling line identification and recording system // Hersey Ralph E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.54 MB | Shaun Ewing | Nov 25, 1952 00:00 | US-2619545-A // Telephone calling line identification and recording system // Hersey Ralph E. // Bell Telephone Labor Inc | ||||
| PDF File 2619546.pdf | 1.74 MB | Shaun Ewing | Nov 25, 1952 00:00 |
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US-2619546-A // Party line identification system // Myers Oscar // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.74 MB | Shaun Ewing | Nov 25, 1952 00:00 | US-2619546-A // Party line identification system // Myers Oscar // Bell Telephone Labor Inc | ||||
| PDF File 2619549.pdf | 960 kB | Shaun Ewing | Nov 25, 1952 00:00 |
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US-2619549-A // Toll supervisory operator's telephone circuit // Buchanan Russell B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 960 kB | Shaun Ewing | Nov 25, 1952 00:00 | US-2619549-A // Toll supervisory operator's telephone circuit // Buchanan Russell B. // Bell Telephone Labor Inc | ||||
| PDF File 2619626.pdf | 798 kB | Shaun Ewing | Nov 25, 1952 00:00 |
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US-2619626-A // Current supply apparatus // Anderson Frederic W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 798 kB | Shaun Ewing | Nov 25, 1952 00:00 | US-2619626-A // Current supply apparatus // Anderson Frederic W. // Bell Telephone Labor Inc | ||||
| PDF File 2619630.pdf | 561 kB | Shaun Ewing | Nov 25, 1952 00:00 |
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US-2619630-A // Regulating apparatus // Stone John R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 561 kB | Shaun Ewing | Nov 25, 1952 00:00 | US-2619630-A // Regulating apparatus // Stone John R. // Bell Telephone Labor Inc | ||||
| PDF File 2619631.pdf | 741 kB | Shaun Ewing | Nov 25, 1952 00:00 |
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US-2619631-A // Regulating apparatus // Hamilton Billy H. ; Spencer Harry H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 741 kB | Shaun Ewing | Nov 25, 1952 00:00 | US-2619631-A // Regulating apparatus // Hamilton Billy H. ; Spencer Harry H. // Bell Telephone Labor Inc | ||||
| PDF File 2620399.pdf | 3.33 MB | Shaun Ewing | Dec 02, 1952 00:00 |
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US-2620399-A // Telephone switching system employing repetitive impulsing // Malthaner William A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 3.33 MB | Shaun Ewing | Dec 02, 1952 00:00 | US-2620399-A // Telephone switching system employing repetitive impulsing // Malthaner William A. // Bell Telephone Labor Inc | ||||
| PDF File 2620402.pdf | 1.69 MB | Shaun Ewing | Dec 02, 1952 00:00 |
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US-2620402-A // Telephone substation circuit with automatic compensation for length of line // Botsford Nelson ; Jr. Albert P. Boysen, ; Aikens Andrew J. ; Jr. Walter D. Goodale, ; Inglis Alfred H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.69 MB | Shaun Ewing | Dec 02, 1952 00:00 | US-2620402-A // Telephone substation circuit with automatic compensation for length of line // Botsford Nelson ; Jr. Albert P. Boysen, ; Aikens Andrew J. ; Jr. Walter D. Goodale, ; Inglis Alfred H. // Bell Telephone Labor Inc | ||||
| PDF File 2620448.pdf | 1.20 MB | Shaun Ewing | Dec 02, 1952 00:00 |
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US-2620448-A // Transistor trigger circuits // Jr. Robert L. Wallace, // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.20 MB | Shaun Ewing | Dec 02, 1952 00:00 | US-2620448-A // Transistor trigger circuits // Jr. Robert L. Wallace, // Bell Telephone Labor Inc | ||||
| PDF File 2621295.pdf | 1.35 MB | Shaun Ewing | Dec 09, 1952 00:00 |
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US-2621295-A // Electrical wave producing circuit // Lacy Lester Y. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.35 MB | Shaun Ewing | Dec 09, 1952 00:00 | US-2621295-A // Electrical wave producing circuit // Lacy Lester Y. // Bell Telephone Labor Inc |
