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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1834005.pdf | 495 kB | Shaun Ewing | Dec 01, 1931 00:00 |
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US-1834005-A // Selective circuit arrangement // Roberts Leland C. // American Telephone & Telegraph | |||
| Version 1 (current) | 495 kB | Shaun Ewing | Dec 01, 1931 00:00 | US-1834005-A // Selective circuit arrangement // Roberts Leland C. // American Telephone & Telegraph | ||||
| PDF File 1819069.pdf | 494 kB | Shaun Ewing | Aug 18, 1931 00:00 |
|
US-1819069-A // Static frequency changer // Bonell Ralph K. // American Telephone & Telegraph | |||
| Version 1 (current) | 494 kB | Shaun Ewing | Aug 18, 1931 00:00 | US-1819069-A // Static frequency changer // Bonell Ralph K. // American Telephone & Telegraph | ||||
| PDF File 1804547.pdf | 494 kB | Shaun Ewing | May 12, 1931 00:00 |
|
US-1804547-A // Telegraph repeater arrangement // Shanck Roy B. // American Telephone & Telegraph | |||
| Version 1 (current) | 494 kB | Shaun Ewing | May 12, 1931 00:00 | US-1804547-A // Telegraph repeater arrangement // Shanck Roy B. // American Telephone & Telegraph | ||||
| PDF File 1885826.pdf | 491 kB | Shaun Ewing | Nov 01, 1932 00:00 |
|
US-1885826-A // System of photography employing frequency modulation // Holden William H. T. ; Bonell Ralph K. // American Telephone & Telegraph | |||
| Version 1 (current) | 491 kB | Shaun Ewing | Nov 01, 1932 00:00 | US-1885826-A // System of photography employing frequency modulation // Holden William H. T. ; Bonell Ralph K. // American Telephone & Telegraph | ||||
| PDF File 2094116.pdf | 490 kB | Shaun Ewing | Sept 28, 1937 00:00 |
|
US-2094116-A // Earth resistivity measurement // Bowen Arnold Everet // American Telephone & Telegraph | |||
| Version 1 (current) | 490 kB | Shaun Ewing | Sept 28, 1937 00:00 | US-2094116-A // Earth resistivity measurement // Bowen Arnold Everet // American Telephone & Telegraph | ||||
| PDF File 1921079.pdf | 490 kB | Shaun Ewing | Aug 08, 1933 00:00 |
|
US-1921079-A // Telegraph system // Hamilton Baxter P. // American Telephone & Telegraph | |||
| Version 1 (current) | 490 kB | Shaun Ewing | Aug 08, 1933 00:00 | US-1921079-A // Telegraph system // Hamilton Baxter P. // American Telephone & Telegraph | ||||
| PDF File 2085175.pdf | 490 kB | Shaun Ewing | Jun 29, 1937 00:00 |
|
US-2085175-A // Teletypewriter // Thornton Floyd Edwin // American Telephone & Telegraph | |||
| Version 1 (current) | 490 kB | Shaun Ewing | Jun 29, 1937 00:00 | US-2085175-A // Teletypewriter // Thornton Floyd Edwin // American Telephone & Telegraph | ||||
| PDF File 1904494.pdf | 489 kB | Shaun Ewing | Apr 18, 1933 00:00 |
|
US-1904494-A // Tuning fork generator // Matte Andrew L. // American Telephone & Telegraph | |||
| Version 1 (current) | 489 kB | Shaun Ewing | Apr 18, 1933 00:00 | US-1904494-A // Tuning fork generator // Matte Andrew L. // American Telephone & Telegraph | ||||
| PDF File 1859386.pdf | 488 kB | Shaun Ewing | May 24, 1932 00:00 |
|
US-1859386-A // Telephone system // Edwards William H. // American Telephone & Telegraph | |||
| Version 1 (current) | 488 kB | Shaun Ewing | May 24, 1932 00:00 | US-1859386-A // Telephone system // Edwards William H. // American Telephone & Telegraph | ||||
| PDF File 2087352.pdf | 488 kB | Shaun Ewing | Jul 20, 1937 00:00 |
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US-2087352-A // Signaling system // Mitchell Doren ; Abraham Leonard G. // American Telephone & Telegraph | |||
| Version 1 (current) | 488 kB | Shaun Ewing | Jul 20, 1937 00:00 | US-2087352-A // Signaling system // Mitchell Doren ; Abraham Leonard G. // American Telephone & Telegraph | ||||
| PDF File 1962195.pdf | 488 kB | Shaun Ewing | Jun 12, 1934 00:00 |
|
US-1962195-A // Method and apparatus for the generation of electric oscillations // Hollmann Hans Erich // American Telephone & Telegraph | |||
| Version 1 (current) | 488 kB | Shaun Ewing | Jun 12, 1934 00:00 | US-1962195-A // Method and apparatus for the generation of electric oscillations // Hollmann Hans Erich // American Telephone & Telegraph | ||||
| PDF File 1943475.pdf | 488 kB | Shaun Ewing | Jan 16, 1934 00:00 |
|
US-1943475-A // System for selective calling of telegraph stations // Gurley Roger K. // American Telephone & Telegraph | |||
| Version 1 (current) | 488 kB | Shaun Ewing | Jan 16, 1934 00:00 | US-1943475-A // System for selective calling of telegraph stations // Gurley Roger K. // American Telephone & Telegraph | ||||
| PDF File 2021268.pdf | 487 kB | Shaun Ewing | Nov 19, 1935 00:00 |
|
US-2021268-A // Electrical protective system // Swart Leland Kasson // American Telephone & Telegraph | |||
| Version 1 (current) | 487 kB | Shaun Ewing | Nov 19, 1935 00:00 | US-2021268-A // Electrical protective system // Swart Leland Kasson // American Telephone & Telegraph | ||||
| PDF File 1879773.pdf | 486 kB | Shaun Ewing | Sept 27, 1932 00:00 |
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US-1879773-A // Electrical protective system // Swart Leland K. // American Telephone & Telegraph | |||
| Version 1 (current) | 486 kB | Shaun Ewing | Sept 27, 1932 00:00 | US-1879773-A // Electrical protective system // Swart Leland K. // American Telephone & Telegraph | ||||
| PDF File 1852050.pdf | 486 kB | Shaun Ewing | Apr 05, 1932 00:00 |
|
US-1852050-A // Telegraph system // Hamilton Baxter P. // American Telephone & Telegraph | |||
| Version 1 (current) | 486 kB | Shaun Ewing | Apr 05, 1932 00:00 | US-1852050-A // Telegraph system // Hamilton Baxter P. // American Telephone & Telegraph | ||||
| PDF File 2014104.pdf | 486 kB | Shaun Ewing | Sept 10, 1935 00:00 |
|
US-2014104-A // Sheet form holder // Dencklau Karl R. // American Telephone & Telegraph | |||
| Version 1 (current) | 486 kB | Shaun Ewing | Sept 10, 1935 00:00 | US-2014104-A // Sheet form holder // Dencklau Karl R. // American Telephone & Telegraph | ||||
| PDF File 1916304.pdf | 486 kB | Shaun Ewing | Jul 04, 1933 00:00 |
|
US-1916304-A // Testing system // Edwards Paul G. // American Telephone & Telegraph | |||
| Version 1 (current) | 486 kB | Shaun Ewing | Jul 04, 1933 00:00 | US-1916304-A // Testing system // Edwards Paul G. // American Telephone & Telegraph | ||||
| PDF File 1853117.pdf | 486 kB | Shaun Ewing | Apr 12, 1932 00:00 |
|
US-1853117-A // Receiver for radio broadcast and wire distributing systems // Espenschied Lloyd ; Fetter Charles H. // American Telephone & Telegraph | |||
| Version 1 (current) | 486 kB | Shaun Ewing | Apr 12, 1932 00:00 | US-1853117-A // Receiver for radio broadcast and wire distributing systems // Espenschied Lloyd ; Fetter Charles H. // American Telephone & Telegraph | ||||
| PDF File 2075920.pdf | 485 kB | Shaun Ewing | Apr 06, 1937 00:00 |
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US-2075920-A // Shielding system // Wascheck George // American Telephone & Telegraph | |||
| Version 1 (current) | 485 kB | Shaun Ewing | Apr 06, 1937 00:00 | US-2075920-A // Shielding system // Wascheck George // American Telephone & Telegraph | ||||
| PDF File 2079723.pdf | 484 kB | Shaun Ewing | May 11, 1937 00:00 |
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US-2079723-A // Electrical protective system // Swart Leland Kasson // American Telephone & Telegraph | |||
| Version 1 (current) | 484 kB | Shaun Ewing | May 11, 1937 00:00 | US-2079723-A // Electrical protective system // Swart Leland Kasson // American Telephone & Telegraph |
