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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1811955.pdf | 578 kB | Shaun Ewing | Jun 30, 1931 00:00 |
|
US-1811955-A // Transmission volume control // Mitchell Doren ; Silent Harold C. // American Telephone & Telegraph | |||
| Version 1 (current) | 578 kB | Shaun Ewing | Jun 30, 1931 00:00 | US-1811955-A // Transmission volume control // Mitchell Doren ; Silent Harold C. // American Telephone & Telegraph | ||||
| PDF File 1847151.pdf | 577 kB | Shaun Ewing | Mar 01, 1932 00:00 |
|
US-1847151-A // Transmitter of variably biased impulses // Watson Edward F. ; Hunt Arthur E. // American Telephone & Telegraph | |||
| Version 1 (current) | 577 kB | Shaun Ewing | Mar 01, 1932 00:00 | US-1847151-A // Transmitter of variably biased impulses // Watson Edward F. ; Hunt Arthur E. // American Telephone & Telegraph | ||||
| PDF File 2072227.pdf | 575 kB | Shaun Ewing | Mar 02, 1937 00:00 |
|
US-2072227-A // Signaling system for voice and telegraph operation // Taylor Edmund Randolph ; Mitchell Doren // American Telephone & Telegraph | |||
| Version 1 (current) | 575 kB | Shaun Ewing | Mar 02, 1937 00:00 | US-2072227-A // Signaling system for voice and telegraph operation // Taylor Edmund Randolph ; Mitchell Doren // American Telephone & Telegraph | ||||
| PDF File 1816953.pdf | 574 kB | Shaun Ewing | Aug 04, 1931 00:00 |
|
US-1816953-A // Privacy signaling system // Bown Ralph // American Telephone & Telegraph | |||
| Version 1 (current) | 574 kB | Shaun Ewing | Aug 04, 1931 00:00 | US-1816953-A // Privacy signaling system // Bown Ralph // American Telephone & Telegraph | ||||
| PDF File 1830896.pdf | 573 kB | Shaun Ewing | Nov 10, 1931 00:00 |
|
US-1830896-A // Adjustable electric filter system // Wintringham William T. // American Telephone & Telegraph | |||
| Version 1 (current) | 573 kB | Shaun Ewing | Nov 10, 1931 00:00 | US-1830896-A // Adjustable electric filter system // Wintringham William T. // American Telephone & Telegraph | ||||
| PDF File 2066490.pdf | 572 kB | Shaun Ewing | Jan 05, 1937 00:00 |
|
US-2066490-A // Switch // Sheatsley Paul Weidner // American Telephone & Telegraph | |||
| Version 1 (current) | 572 kB | Shaun Ewing | Jan 05, 1937 00:00 | US-2066490-A // Switch // Sheatsley Paul Weidner // American Telephone & Telegraph | ||||
| PDF File 1895058.pdf | 571 kB | Shaun Ewing | Jan 24, 1933 00:00 |
|
US-1895058-A // Combined telegraphy and telephony // Weaver Allan // American Telephone & Telegraph | |||
| Version 1 (current) | 571 kB | Shaun Ewing | Jan 24, 1933 00:00 | US-1895058-A // Combined telegraphy and telephony // Weaver Allan // American Telephone & Telegraph | ||||
| PDF File 1858307.pdf | 570 kB | Shaun Ewing | May 17, 1932 00:00 |
|
US-1858307-A // Means for compensating for nonlinear distortion in transmission circuits // Nyquist Harry // American Telephone & Telegraph | |||
| Version 1 (current) | 570 kB | Shaun Ewing | May 17, 1932 00:00 | US-1858307-A // Means for compensating for nonlinear distortion in transmission circuits // Nyquist Harry // American Telephone & Telegraph | ||||
| PDF File 2041964.pdf | 569 kB | Shaun Ewing | May 26, 1936 00:00 |
|
US-2041964-A // Telephone system // Jr. George Sandalls, // American Telephone & Telegraph | |||
| Version 1 (current) | 569 kB | Shaun Ewing | May 26, 1936 00:00 | US-2041964-A // Telephone system // Jr. George Sandalls, // American Telephone & Telegraph | ||||
| PDF File 1837337.pdf | 569 kB | Shaun Ewing | Dec 22, 1931 00:00 |
|
US-1837337-A // Means for producing current of reduced frequency // Roberts Leland C. // American Telephone & Telegraph | |||
| Version 1 (current) | 569 kB | Shaun Ewing | Dec 22, 1931 00:00 | US-1837337-A // Means for producing current of reduced frequency // Roberts Leland C. // American Telephone & Telegraph | ||||
| PDF File 1859385.pdf | 568 kB | Shaun Ewing | May 24, 1932 00:00 |
|
US-1859385-A // Telephone system // Edwards William H. // American Telephone & Telegraph | |||
| Version 1 (current) | 568 kB | Shaun Ewing | May 24, 1932 00:00 | US-1859385-A // Telephone system // Edwards William H. // American Telephone & Telegraph | ||||
| PDF File 1981113.pdf | 568 kB | Shaun Ewing | Nov 20, 1934 00:00 |
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US-1981113-A // Privacy system // Mitchell Doren // American Telephone & Telegraph | |||
| Version 1 (current) | 568 kB | Shaun Ewing | Nov 20, 1934 00:00 | US-1981113-A // Privacy system // Mitchell Doren // American Telephone & Telegraph | ||||
| PDF File 1940769.pdf | 566 kB | Shaun Ewing | Dec 26, 1933 00:00 |
|
US-1940769-A // Coupling device // Potter Ralph K. // American Telephone & Telegraph | |||
| Version 1 (current) | 566 kB | Shaun Ewing | Dec 26, 1933 00:00 | US-1940769-A // Coupling device // Potter Ralph K. // American Telephone & Telegraph | ||||
| PDF File 1815255.pdf | 566 kB | Shaun Ewing | Jul 21, 1931 00:00 |
|
US-1815255-A // Impedance equalizer for any smooth line // Hoyt Ray S. // American Telephone & Telegraph | |||
| Version 1 (current) | 566 kB | Shaun Ewing | Jul 21, 1931 00:00 | US-1815255-A // Impedance equalizer for any smooth line // Hoyt Ray S. // American Telephone & Telegraph | ||||
| PDF File 1946607.pdf | 565 kB | Shaun Ewing | Feb 13, 1934 00:00 |
|
US-1946607-A // Amplifier control // Affel Herman A. ; Green Estill I. // American Telephone & Telegraph | |||
| Version 1 (current) | 565 kB | Shaun Ewing | Feb 13, 1934 00:00 | US-1946607-A // Amplifier control // Affel Herman A. ; Green Estill I. // American Telephone & Telegraph | ||||
| PDF File 1885299.pdf | 563 kB | Shaun Ewing | Nov 01, 1932 00:00 |
|
US-1885299-A // Monitoring system // Schramm Fred W. // American Telephone & Telegraph | |||
| Version 1 (current) | 563 kB | Shaun Ewing | Nov 01, 1932 00:00 | US-1885299-A // Monitoring system // Schramm Fred W. // American Telephone & Telegraph | ||||
| PDF File 1862595.pdf | 560 kB | Shaun Ewing | Jun 14, 1932 00:00 |
|
US-1862595-A // Voltage regulator // Holden William H. T. // American Telephone & Telegraph | |||
| Version 1 (current) | 560 kB | Shaun Ewing | Jun 14, 1932 00:00 | US-1862595-A // Voltage regulator // Holden William H. T. // American Telephone & Telegraph | ||||
| PDF File 1980292.pdf | 559 kB | Shaun Ewing | Nov 13, 1934 00:00 |
|
US-1980292-A // Method and apparatus for producing musical sounds // Potter Ralph K. // American Telephone & Telegraph | |||
| Version 1 (current) | 559 kB | Shaun Ewing | Nov 13, 1934 00:00 | US-1980292-A // Method and apparatus for producing musical sounds // Potter Ralph K. // American Telephone & Telegraph | ||||
| PDF File 2033237.pdf | 559 kB | Shaun Ewing | Mar 10, 1936 00:00 |
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US-2033237-A // Frequency control system // Gannett Danforth K. // American Telephone & Telegraph | |||
| Version 1 (current) | 559 kB | Shaun Ewing | Mar 10, 1936 00:00 | US-2033237-A // Frequency control system // Gannett Danforth K. // American Telephone & Telegraph | ||||
| PDF File 2108219.pdf | 557 kB | Shaun Ewing | Feb 15, 1938 00:00 |
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US-2108219-A // Gas tube circuits // Swart Leland K. // American Telephone & Telegraph | |||
| Version 1 (current) | 557 kB | Shaun Ewing | Feb 15, 1938 00:00 | US-2108219-A // Gas tube circuits // Swart Leland K. // American Telephone & Telegraph |
