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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1752360.pdf | 768 kB | Shaun Ewing | Apr 01, 1930 00:00 |
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US-1752360-A // Reduction of static interference in carrier systems // Affel Herman A. // American Telephone & Telegraph | |||
| Version 1 (current) | 768 kB | Shaun Ewing | Apr 01, 1930 00:00 | US-1752360-A // Reduction of static interference in carrier systems // Affel Herman A. // American Telephone & Telegraph | ||||
| PDF File 1735037.pdf | 767 kB | Shaun Ewing | Nov 12, 1929 00:00 |
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US-1735037-A // Method of and apparatus for reducing width of transmission bands // Carpe Allen // American Telephone & Telegraph | |||
| Version 1 (current) | 767 kB | Shaun Ewing | Nov 12, 1929 00:00 | US-1735037-A // Method of and apparatus for reducing width of transmission bands // Carpe Allen // American Telephone & Telegraph | ||||
| PDF File 1632025.pdf | 765 kB | Shaun Ewing | Jun 14, 1927 00:00 |
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US-1632025-A // Automatic telephone system // Dustin George E. // American Telephone & Telegraph | |||
| Version 1 (current) | 765 kB | Shaun Ewing | Jun 14, 1927 00:00 | US-1632025-A // Automatic telephone system // Dustin George E. // American Telephone & Telegraph | ||||
| PDF File 1566345.pdf | 765 kB | Shaun Ewing | Dec 22, 1925 00:00 |
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US-1566345-A // Trunk circuits // Peterson George H. // American Telephone & Telegraph | |||
| Version 1 (current) | 765 kB | Shaun Ewing | Dec 22, 1925 00:00 | US-1566345-A // Trunk circuits // Peterson George H. // American Telephone & Telegraph | ||||
| PDF File 1539920.pdf | 765 kB | Shaun Ewing | Jun 02, 1925 00:00 |
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US-1539920-A // Signaling system // Taggart Dawson M. // American Telephone & Telegraph | |||
| Version 1 (current) | 765 kB | Shaun Ewing | Jun 02, 1925 00:00 | US-1539920-A // Signaling system // Taggart Dawson M. // American Telephone & Telegraph | ||||
| PDF File 1511014.pdf | 760 kB | Shaun Ewing | Oct 07, 1924 00:00 |
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US-1511014-A // Transmission regulation // Affel Herman A. // American Telephone & Telegraph | |||
| Version 1 (current) | 760 kB | Shaun Ewing | Oct 07, 1924 00:00 | US-1511014-A // Transmission regulation // Affel Herman A. // American Telephone & Telegraph | ||||
| PDF File 1464563.pdf | 759 kB | Shaun Ewing | Aug 14, 1923 00:00 |
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US-1464563-A // Repeater-control arrangement // Demarest Charles S. ; Loynes Owen H. // American Telephone & Telegraph | |||
| Version 1 (current) | 759 kB | Shaun Ewing | Aug 14, 1923 00:00 | US-1464563-A // Repeater-control arrangement // Demarest Charles S. ; Loynes Owen H. // American Telephone & Telegraph | ||||
| PDF File 1658856.pdf | 758 kB | Shaun Ewing | Feb 14, 1928 00:00 |
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US-1658856-A // Transmission-line control system // Potter Ralph K. // American Telephone & Telegraph | |||
| Version 1 (current) | 758 kB | Shaun Ewing | Feb 14, 1928 00:00 | US-1658856-A // Transmission-line control system // Potter Ralph K. // American Telephone & Telegraph | ||||
| PDF File 1642710.pdf | 758 kB | Shaun Ewing | Sept 20, 1927 00:00 |
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US-1642710-A // Pilot-channel-indicating system // Affel Herman A. // American Telephone & Telegraph | |||
| Version 1 (current) | 758 kB | Shaun Ewing | Sept 20, 1927 00:00 | US-1642710-A // Pilot-channel-indicating system // Affel Herman A. // American Telephone & Telegraph | ||||
| PDF File 1630340.pdf | 757 kB | Shaun Ewing | May 31, 1927 00:00 |
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US-1630340-A // Telegraph system // Hall Merton C. // American Telephone & Telegraph | |||
| Version 1 (current) | 757 kB | Shaun Ewing | May 31, 1927 00:00 | US-1630340-A // Telegraph system // Hall Merton C. // American Telephone & Telegraph | ||||
| PDF File 1528010.pdf | 757 kB | Shaun Ewing | Mar 03, 1925 00:00 |
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US-1528010-A // Radio signaling system // Demarest Charles S. ; Almquist Milton L. // American Telephone & Telegraph | |||
| Version 1 (current) | 757 kB | Shaun Ewing | Mar 03, 1925 00:00 | US-1528010-A // Radio signaling system // Demarest Charles S. ; Almquist Milton L. // American Telephone & Telegraph | ||||
| PDF File 1563370.pdf | 756 kB | Shaun Ewing | Dec 01, 1925 00:00 |
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US-1563370-A // Testing set for telephone systems // Jacobsen Emil // American Telephone & Telegraph | |||
| Version 1 (current) | 756 kB | Shaun Ewing | Dec 01, 1925 00:00 | US-1563370-A // Testing set for telephone systems // Jacobsen Emil // American Telephone & Telegraph | ||||
| PDF File 1465299.pdf | 755 kB | Shaun Ewing | Aug 21, 1923 00:00 |
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US-1465299-A // Low-frequency alternating-current signaling system // Espenschied Lloyd ; Toomey John F. // American Telephone & Telegraph | |||
| Version 1 (current) | 755 kB | Shaun Ewing | Aug 21, 1923 00:00 | US-1465299-A // Low-frequency alternating-current signaling system // Espenschied Lloyd ; Toomey John F. // American Telephone & Telegraph | ||||
| PDF File 1431995.pdf | 755 kB | Shaun Ewing | Oct 17, 1922 00:00 |
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US-1431995-A // Signaling apparatus and circuits // Toomey John F. // American Telephone & Telegraph | |||
| Version 1 (current) | 755 kB | Shaun Ewing | Oct 17, 1922 00:00 | US-1431995-A // Signaling apparatus and circuits // Toomey John F. // American Telephone & Telegraph | ||||
| PDF File 1636053.pdf | 754 kB | Shaun Ewing | Jul 19, 1927 00:00 |
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US-1636053-A // Carrier-telegraph repeater circuits // Hamilton Baxter P. // American Telephone & Telegraph | |||
| Version 1 (current) | 754 kB | Shaun Ewing | Jul 19, 1927 00:00 | US-1636053-A // Carrier-telegraph repeater circuits // Hamilton Baxter P. // American Telephone & Telegraph | ||||
| PDF File 1747221.pdf | 754 kB | Shaun Ewing | Feb 18, 1930 00:00 |
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US-1747221-A // Automatic selection of receiving channels // Bown Ralph // American Telephone & Telegraph | |||
| Version 1 (current) | 754 kB | Shaun Ewing | Feb 18, 1930 00:00 | US-1747221-A // Automatic selection of receiving channels // Bown Ralph // American Telephone & Telegraph | ||||
| PDF File 1375405.pdf | 753 kB | Shaun Ewing | Apr 19, 1921 00:00 |
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US-1375405-A // Apparatus for testing capacity of electric conductors // Martin William H. // American Telephone & Telegraph | |||
| Version 1 (current) | 753 kB | Shaun Ewing | Apr 19, 1921 00:00 | US-1375405-A // Apparatus for testing capacity of electric conductors // Martin William H. // American Telephone & Telegraph | ||||
| PDF File 1582948.pdf | 753 kB | Shaun Ewing | May 04, 1926 00:00 |
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US-1582948-A // Testing system // Walters James N. ; Ewing Claude // American Telephone & Telegraph | |||
| Version 1 (current) | 753 kB | Shaun Ewing | May 04, 1926 00:00 | US-1582948-A // Testing system // Walters James N. ; Ewing Claude // American Telephone & Telegraph | ||||
| PDF File 1412458.pdf | 753 kB | Shaun Ewing | Apr 11, 1922 00:00 |
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US-1412458-A // Message-registering system // Darrow Leo H. // American Telephone & Telegraph | |||
| Version 1 (current) | 753 kB | Shaun Ewing | Apr 11, 1922 00:00 | US-1412458-A // Message-registering system // Darrow Leo H. // American Telephone & Telegraph | ||||
| PDF File 1605001.pdf | 751 kB | Shaun Ewing | Nov 02, 1926 00:00 |
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US-1605001-A // Vacuum valve with glow discharge // Schroter Fritz // American Telephone & Telegraph | |||
| Version 1 (current) | 751 kB | Shaun Ewing | Nov 02, 1926 00:00 | US-1605001-A // Vacuum valve with glow discharge // Schroter Fritz // American Telephone & Telegraph |
