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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1738307.pdf | 535 kB | Shaun Ewing | Dec 03, 1929 00:00 |
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US-1738307-A // Metallic element // Mckeehan Louis W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 535 kB | Shaun Ewing | Dec 03, 1929 00:00 | US-1738307-A // Metallic element // Mckeehan Louis W. // Bell Telephone Labor Inc | ||||
| PDF File 1753325.pdf | 532 kB | Shaun Ewing | Apr 08, 1930 00:00 |
|
US-1753325-A // Retardation-coil system // Whittle Horace // Bell Telephone Labor Inc | |||
| Version 1 (current) | 532 kB | Shaun Ewing | Apr 08, 1930 00:00 | US-1753325-A // Retardation-coil system // Whittle Horace // Bell Telephone Labor Inc | ||||
| PDF File 1777118.pdf | 530 kB | Shaun Ewing | Sept 30, 1930 00:00 |
|
US-1777118-A // Acoustic device // Harrison Henry C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 530 kB | Shaun Ewing | Sept 30, 1930 00:00 | US-1777118-A // Acoustic device // Harrison Henry C. // Bell Telephone Labor Inc | ||||
| PDF File 1719479.pdf | 528 kB | Shaun Ewing | Jul 02, 1929 00:00 |
|
US-1719479-A // Composite conductor // Legg Victor E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 528 kB | Shaun Ewing | Jul 02, 1929 00:00 | US-1719479-A // Composite conductor // Legg Victor E. // Bell Telephone Labor Inc | ||||
| PDF File 1768283.pdf | 527 kB | Shaun Ewing | Jun 24, 1930 00:00 |
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US-1768283-A // Control system // Bell John H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 527 kB | Shaun Ewing | Jun 24, 1930 00:00 | US-1768283-A // Control system // Bell John H. // Bell Telephone Labor Inc | ||||
| PDF File 1778378.pdf | 527 kB | Shaun Ewing | Oct 14, 1930 00:00 |
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US-1778378-A // Telephone system // Butz Edward D. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 527 kB | Shaun Ewing | Oct 14, 1930 00:00 | US-1778378-A // Telephone system // Butz Edward D. // Bell Telephone Labor Inc | ||||
| PDF File 1662966.pdf | 526 kB | Shaun Ewing | Mar 20, 1928 00:00 |
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US-1662966-A // Substation circuit // Foley John W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 526 kB | Shaun Ewing | Mar 20, 1928 00:00 | US-1662966-A // Substation circuit // Foley John W. // Bell Telephone Labor Inc | ||||
| PDF File 1763880.pdf | 525 kB | Shaun Ewing | Jun 17, 1930 00:00 |
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US-1763880-A // Signaling system // Burton Everett T. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 525 kB | Shaun Ewing | Jun 17, 1930 00:00 | US-1763880-A // Signaling system // Burton Everett T. // Bell Telephone Labor Inc | ||||
| PDF File 1702568.pdf | 520 kB | Shaun Ewing | Feb 19, 1929 00:00 |
|
US-1702568-A // Constant frequency wave source // Marrison Warren A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 520 kB | Shaun Ewing | Feb 19, 1929 00:00 | US-1702568-A // Constant frequency wave source // Marrison Warren A. // Bell Telephone Labor Inc | ||||
| PDF File 1738247.pdf | 519 kB | Shaun Ewing | Dec 03, 1929 00:00 |
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US-1738247-A // Current-controlling system // Husta Philip // Bell Telephone Labor Inc | |||
| Version 1 (current) | 519 kB | Shaun Ewing | Dec 03, 1929 00:00 | US-1738247-A // Current-controlling system // Husta Philip // Bell Telephone Labor Inc | ||||
| PDF File 1719492.pdf | 516 kB | Shaun Ewing | Jul 02, 1929 00:00 |
|
US-1719492-A // Regulator system // Stoller Hugh M. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 516 kB | Shaun Ewing | Jul 02, 1929 00:00 | US-1719492-A // Regulator system // Stoller Hugh M. // Bell Telephone Labor Inc | ||||
| PDF File 1725377.pdf | 514 kB | Shaun Ewing | Aug 20, 1929 00:00 |
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US-1725377-A // Direct-current-supply system // Siegmund Humphreys O. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 514 kB | Shaun Ewing | Aug 20, 1929 00:00 | US-1725377-A // Direct-current-supply system // Siegmund Humphreys O. // Bell Telephone Labor Inc | ||||
| PDF File 1711690.pdf | 513 kB | Shaun Ewing | May 07, 1929 00:00 |
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US-1711690-A // Phonograph-record-recording machine // Richard Charles D. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 513 kB | Shaun Ewing | May 07, 1929 00:00 | US-1711690-A // Phonograph-record-recording machine // Richard Charles D. // Bell Telephone Labor Inc | ||||
| PDF File 1747163.pdf | 512 kB | Shaun Ewing | Feb 18, 1930 00:00 |
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US-1747163-A // Carrier-system-testing method and circuit // Dickieson Alton C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 512 kB | Shaun Ewing | Feb 18, 1930 00:00 | US-1747163-A // Carrier-system-testing method and circuit // Dickieson Alton C. // Bell Telephone Labor Inc | ||||
| PDF File 1778779.pdf | 506 kB | Shaun Ewing | Oct 21, 1930 00:00 |
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US-1778779-A // Control circuit for transmission systems // Whiting Donald F. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 506 kB | Shaun Ewing | Oct 21, 1930 00:00 | US-1778779-A // Control circuit for transmission systems // Whiting Donald F. // Bell Telephone Labor Inc | ||||
| PDF File 1658197.pdf | 504 kB | Shaun Ewing | Feb 07, 1928 00:00 |
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US-1658197-A // Telephone-exchange system // Hinrichsen Edward E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 504 kB | Shaun Ewing | Feb 07, 1928 00:00 | US-1658197-A // Telephone-exchange system // Hinrichsen Edward E. // Bell Telephone Labor Inc | ||||
| PDF File 1779126.pdf | 504 kB | Shaun Ewing | Oct 21, 1930 00:00 |
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US-1779126-A // Negative resistance circuits // Graham Frank Howard // Bell Telephone Labor Inc | |||
| Version 1 (current) | 504 kB | Shaun Ewing | Oct 21, 1930 00:00 | US-1779126-A // Negative resistance circuits // Graham Frank Howard // Bell Telephone Labor Inc | ||||
| PDF File 1747835.pdf | 503 kB | Shaun Ewing | Feb 18, 1930 00:00 |
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US-1747835-A // Two-way signaling system // Mathes Robert C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 503 kB | Shaun Ewing | Feb 18, 1930 00:00 | US-1747835-A // Two-way signaling system // Mathes Robert C. // Bell Telephone Labor Inc | ||||
| PDF File 1745680.pdf | 501 kB | Shaun Ewing | Feb 04, 1930 00:00 |
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US-1745680-A // Continuously-loaded telephone or telegraph cable // Kemp Archie R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 501 kB | Shaun Ewing | Feb 04, 1930 00:00 | US-1745680-A // Continuously-loaded telephone or telegraph cable // Kemp Archie R. // Bell Telephone Labor Inc | ||||
| PDF File 1606817.pdf | 501 kB | Shaun Ewing | Nov 16, 1926 00:00 |
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US-1606817-A // Electrical network // Stevenson George H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 501 kB | Shaun Ewing | Nov 16, 1926 00:00 | US-1606817-A // Electrical network // Stevenson George H. // Bell Telephone Labor Inc |
