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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 2155515.pdf | 886 kB | Shaun Ewing | Apr 25, 1939 00:00 |
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US-2155515-A // Regulator system // Trucksess David E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 886 kB | Shaun Ewing | Apr 25, 1939 00:00 | US-2155515-A // Regulator system // Trucksess David E. // Bell Telephone Labor Inc | ||||
| PDF File 2155508.pdf | 816 kB | Shaun Ewing | Apr 25, 1939 00:00 |
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US-2155508-A // Wave guide impedance element and network // Schelkunoff Sergel A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 816 kB | Shaun Ewing | Apr 25, 1939 00:00 | US-2155508-A // Wave guide impedance element and network // Schelkunoff Sergel A. // Bell Telephone Labor Inc | ||||
| PDF File 2155495.pdf | 596 kB | Shaun Ewing | Apr 25, 1939 00:00 |
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US-2155495-A // Telephone booth // Kuntz Frank A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 596 kB | Shaun Ewing | Apr 25, 1939 00:00 | US-2155495-A // Telephone booth // Kuntz Frank A. // Bell Telephone Labor Inc | ||||
| PDF File 2155230.pdf | 573 kB | Shaun Ewing | Apr 18, 1939 00:00 |
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US-2155230-A // Peak voltage limiter // Holden William H. T. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 573 kB | Shaun Ewing | Apr 18, 1939 00:00 | US-2155230-A // Peak voltage limiter // Holden William H. T. // Bell Telephone Labor Inc | ||||
| PDF File 2155192.pdf | 725 kB | Shaun Ewing | Apr 18, 1939 00:00 |
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US-2155192-A // Signaling // Johnson John B. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 725 kB | Shaun Ewing | Apr 18, 1939 00:00 | US-2155192-A // Signaling // Johnson John B. // Bell Telephone Labor Inc | ||||
| PDF File 2155056.pdf | 945 kB | Shaun Ewing | Apr 18, 1939 00:00 |
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US-2155056-A // Signaling system // Mitchell Doren // Bell Telephone Labor Inc | |||
| Version 1 (current) | 945 kB | Shaun Ewing | Apr 18, 1939 00:00 | US-2155056-A // Signaling system // Mitchell Doren // Bell Telephone Labor Inc | ||||
| PDF File 2155044.pdf | 483 kB | Shaun Ewing | Apr 18, 1939 00:00 |
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US-2155044-A // Wire laying machine // Gray Joseph H. ; Kent Robert J. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 483 kB | Shaun Ewing | Apr 18, 1939 00:00 | US-2155044-A // Wire laying machine // Gray Joseph H. ; Kent Robert J. // Bell Telephone Labor Inc | ||||
| PDF File 2155035.pdf | 1.46 MB | Shaun Ewing | Apr 18, 1939 00:00 |
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US-2155035-A // Piezoelectric crystal apparatus // Bieling Carl A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.46 MB | Shaun Ewing | Apr 18, 1939 00:00 | US-2155035-A // Piezoelectric crystal apparatus // Bieling Carl A. // Bell Telephone Labor Inc | ||||
| PDF File 2154921.pdf | 638 kB | Shaun Ewing | Apr 18, 1939 00:00 |
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US-2154921-A // Signaling system // Vroom Edward // Bell Telephone Labor Inc | |||
| Version 1 (current) | 638 kB | Shaun Ewing | Apr 18, 1939 00:00 | US-2154921-A // Signaling system // Vroom Edward // Bell Telephone Labor Inc | ||||
| PDF File 2154888.pdf | 734 kB | Shaun Ewing | Apr 18, 1939 00:00 |
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US-2154888-A // Wave translation system // Black Harold S. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 734 kB | Shaun Ewing | Apr 18, 1939 00:00 | US-2154888-A // Wave translation system // Black Harold S. // Bell Telephone Labor Inc | ||||
| PDF File 2154886.pdf | 417 kB | Shaun Ewing | Apr 18, 1939 00:00 |
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US-2154886-A // Selective signaling system // Bachelet Albert E. ; Holden William H. T. // Bell Telephone Labor Inc ; American Telephone & Telegraph | |||
| Version 1 (current) | 417 kB | Shaun Ewing | Apr 18, 1939 00:00 | US-2154886-A // Selective signaling system // Bachelet Albert E. ; Holden William H. T. // Bell Telephone Labor Inc ; American Telephone & Telegraph | ||||
| PDF File 2154624.pdf | 962 kB | Shaun Ewing | Apr 18, 1939 00:00 |
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US-2154624-A // Regenerative telegraph repeater // Kinkead Fullerton S. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 962 kB | Shaun Ewing | Apr 18, 1939 00:00 | US-2154624-A // Regenerative telegraph repeater // Kinkead Fullerton S. // Bell Telephone Labor Inc | ||||
| PDF File 2154623.pdf | 609 kB | Shaun Ewing | Apr 18, 1939 00:00 |
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US-2154623-A // Regenerative telegraph repeater // Kinkead Fullerton S. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 609 kB | Shaun Ewing | Apr 18, 1939 00:00 | US-2154623-A // Regenerative telegraph repeater // Kinkead Fullerton S. // Bell Telephone Labor Inc | ||||
| PDF File 2154608.pdf | 650 kB | Shaun Ewing | Apr 18, 1939 00:00 |
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US-2154608-A // Regenerative telegraph repeater // Dowd Andrew D. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 650 kB | Shaun Ewing | Apr 18, 1939 00:00 | US-2154608-A // Regenerative telegraph repeater // Dowd Andrew D. // Bell Telephone Labor Inc | ||||
| PDF File 2154239.pdf | 371 kB | Shaun Ewing | Apr 11, 1939 00:00 |
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US-2154239-A // Voltage regulating circuit // Grenell Arthur F. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 371 kB | Shaun Ewing | Apr 11, 1939 00:00 | US-2154239-A // Voltage regulating circuit // Grenell Arthur F. // Bell Telephone Labor Inc | ||||
| PDF File 2154232.pdf | 342 kB | Shaun Ewing | Apr 11, 1939 00:00 |
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US-2154232-A // Adjustable inductance // Darnell Paul S. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 342 kB | Shaun Ewing | Apr 11, 1939 00:00 | US-2154232-A // Adjustable inductance // Darnell Paul S. // Bell Telephone Labor Inc | ||||
| PDF File 2154230.pdf | 353 kB | Shaun Ewing | Apr 11, 1939 00:00 |
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US-2154230-A // Signaling system // Cummings George C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 353 kB | Shaun Ewing | Apr 11, 1939 00:00 | US-2154230-A // Signaling system // Cummings George C. // Bell Telephone Labor Inc | ||||
| PDF File 2154068.pdf | 152 kB | Shaun Ewing | Apr 11, 1939 00:00 |
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US-2154068-A // Electrical contact // Ellis William C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 152 kB | Shaun Ewing | Apr 11, 1939 00:00 | US-2154068-A // Electrical contact // Ellis William C. // Bell Telephone Labor Inc | ||||
| PDF File 2154062.pdf | 834 kB | Shaun Ewing | Apr 11, 1939 00:00 |
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US-2154062-A // Gain control circuits // Chesnut Roy W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 834 kB | Shaun Ewing | Apr 11, 1939 00:00 | US-2154062-A // Gain control circuits // Chesnut Roy W. // Bell Telephone Labor Inc | ||||
| PDF File 2153768.pdf | 554 kB | Shaun Ewing | Apr 11, 1939 00:00 |
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US-2153768-A // Antenna system // Morrison John F. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 554 kB | Shaun Ewing | Apr 11, 1939 00:00 | US-2153768-A // Antenna system // Morrison John F. // Bell Telephone Labor Inc |
