Unable to load page tree. It seems that you do not have permission to view the root page.
Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 2028525.pdf | 703 kB | Shaun Ewing | Jan 21, 1936 00:00 |
|
US-2028525-A // Lock // Schmidt Frederic E. // American Telephone & Telegraph | |||
| Version 1 (current) | 703 kB | Shaun Ewing | Jan 21, 1936 00:00 | US-2028525-A // Lock // Schmidt Frederic E. // American Telephone & Telegraph | ||||
| PDF File 1877437.pdf | 703 kB | Shaun Ewing | Sept 13, 1932 00:00 |
|
US-1877437-A // Start-stop telegraph system // Watson Edward F. // American Telephone & Telegraph | |||
| Version 1 (current) | 703 kB | Shaun Ewing | Sept 13, 1932 00:00 | US-1877437-A // Start-stop telegraph system // Watson Edward F. // American Telephone & Telegraph | ||||
| PDF File 1794847.pdf | 703 kB | Shaun Ewing | Mar 03, 1931 00:00 |
|
US-1794847-A // Frequency eliminator // Green Estill I. // American Telephone & Telegraph | |||
| Version 1 (current) | 703 kB | Shaun Ewing | Mar 03, 1931 00:00 | US-1794847-A // Frequency eliminator // Green Estill I. // American Telephone & Telegraph | ||||
| PDF File 2099800.pdf | 702 kB | Shaun Ewing | Nov 23, 1937 00:00 |
|
US-2099800-A // Shielded circuits for open wire lines // Espenschied Lloyd ; Curtis Harold Everdell // American Telephone & Telegraph | |||
| Version 1 (current) | 702 kB | Shaun Ewing | Nov 23, 1937 00:00 | US-2099800-A // Shielded circuits for open wire lines // Espenschied Lloyd ; Curtis Harold Everdell // American Telephone & Telegraph | ||||
| PDF File 1967376.pdf | 701 kB | Shaun Ewing | Jul 24, 1934 00:00 |
|
US-1967376-A // Adjustable aerial platform // Smith Temple C. ; Freeman Albert E. ; Livermore William T. // American Telephone & Telegraph | |||
| Version 1 (current) | 701 kB | Shaun Ewing | Jul 24, 1934 00:00 | US-1967376-A // Adjustable aerial platform // Smith Temple C. ; Freeman Albert E. ; Livermore William T. // American Telephone & Telegraph | ||||
| PDF File 2139798.pdf | 700 kB | Shaun Ewing | Dec 13, 1938 00:00 |
|
US-2139798-A // Telegraph switchboard switching system // Bonorden Allen R. ; Carter Frank J. ; Hanley Frank H. // American Telephone & Telegraph | |||
| Version 1 (current) | 700 kB | Shaun Ewing | Dec 13, 1938 00:00 | US-2139798-A // Telegraph switchboard switching system // Bonorden Allen R. ; Carter Frank J. ; Hanley Frank H. // American Telephone & Telegraph | ||||
| PDF File 1787688.pdf | 698 kB | Shaun Ewing | Jan 06, 1931 00:00 |
|
US-1787688-A // Telephone system // Korthauer Theodor // American Telephone & Telegraph | |||
| Version 1 (current) | 698 kB | Shaun Ewing | Jan 06, 1931 00:00 | US-1787688-A // Telephone system // Korthauer Theodor // American Telephone & Telegraph | ||||
| PDF File 2122538.pdf | 697 kB | Shaun Ewing | Jul 05, 1938 00:00 |
|
US-2122538-A // Wave amplifier // Potter Ralph K. // American Telephone & Telegraph | |||
| Version 1 (current) | 697 kB | Shaun Ewing | Jul 05, 1938 00:00 | US-2122538-A // Wave amplifier // Potter Ralph K. // American Telephone & Telegraph | ||||
| PDF File 1820094.pdf | 697 kB | Shaun Ewing | Aug 25, 1931 00:00 |
|
US-1820094-A // Winch rope winder // Smith Temple C. ; Spowart John B. ; Fitzpatrick Paul G. // American Telephone & Telegraph | |||
| Version 1 (current) | 697 kB | Shaun Ewing | Aug 25, 1931 00:00 | US-1820094-A // Winch rope winder // Smith Temple C. ; Spowart John B. ; Fitzpatrick Paul G. // American Telephone & Telegraph | ||||
| PDF File 1799188.pdf | 694 kB | Shaun Ewing | Apr 07, 1931 00:00 |
|
US-1799188-A // Cross-talk reduction // Weaver Myron A. // American Telephone & Telegraph | |||
| Version 1 (current) | 694 kB | Shaun Ewing | Apr 07, 1931 00:00 | US-1799188-A // Cross-talk reduction // Weaver Myron A. // American Telephone & Telegraph | ||||
| PDF File 2029421.pdf | 692 kB | Shaun Ewing | Feb 04, 1936 00:00 |
|
US-2029421-A // Concentric conductor transmission system // Green Estill I. ; Leibe Frank A. // American Telephone & Telegraph | |||
| Version 1 (current) | 692 kB | Shaun Ewing | Feb 04, 1936 00:00 | US-2029421-A // Concentric conductor transmission system // Green Estill I. ; Leibe Frank A. // American Telephone & Telegraph | ||||
| PDF File 2144710.pdf | 691 kB | Shaun Ewing | Jan 24, 1939 00:00 |
|
US-2144710-A // Gain adjusting apparatus // Romnes Haakon Ingolf // American Telephone & Telegraph | |||
| Version 1 (current) | 691 kB | Shaun Ewing | Jan 24, 1939 00:00 | US-2144710-A // Gain adjusting apparatus // Romnes Haakon Ingolf // American Telephone & Telegraph | ||||
| PDF File 1952280.pdf | 688 kB | Shaun Ewing | Mar 27, 1934 00:00 |
|
US-1952280-A // Call recording system // Parker Ralzemond D. ; Swezey Burdette S. // American Telephone & Telegraph | |||
| Version 1 (current) | 688 kB | Shaun Ewing | Mar 27, 1934 00:00 | US-1952280-A // Call recording system // Parker Ralzemond D. ; Swezey Burdette S. // American Telephone & Telegraph | ||||
| PDF File 2109026.pdf | 688 kB | Shaun Ewing | Feb 22, 1938 00:00 |
|
US-2109026-A // Telegraph repeating system // Mccann Thomas A. // American Telephone & Telegraph | |||
| Version 1 (current) | 688 kB | Shaun Ewing | Feb 22, 1938 00:00 | US-2109026-A // Telegraph repeating system // Mccann Thomas A. // American Telephone & Telegraph | ||||
| PDF File 2085141.pdf | 686 kB | Shaun Ewing | Jun 29, 1937 00:00 |
|
US-2085141-A // Testing circuit for telephone systems // Bierstedt Gustav Carl // American Telephone & Telegraph | |||
| Version 1 (current) | 686 kB | Shaun Ewing | Jun 29, 1937 00:00 | US-2085141-A // Testing circuit for telephone systems // Bierstedt Gustav Carl // American Telephone & Telegraph | ||||
| PDF File 1851092.pdf | 685 kB | Shaun Ewing | Mar 29, 1932 00:00 |
|
US-1851092-A // Transmission delay circuits // Fetter Charles H. // American Telephone & Telegraph | |||
| Version 1 (current) | 685 kB | Shaun Ewing | Mar 29, 1932 00:00 | US-1851092-A // Transmission delay circuits // Fetter Charles H. // American Telephone & Telegraph | ||||
| PDF File 2136984.pdf | 684 kB | Shaun Ewing | Nov 15, 1938 00:00 |
|
US-2136984-A // Impulse transmitting system // Smith Chauncey Webb // American Telephone & Telegraph | |||
| Version 1 (current) | 684 kB | Shaun Ewing | Nov 15, 1938 00:00 | US-2136984-A // Impulse transmitting system // Smith Chauncey Webb // American Telephone & Telegraph | ||||
| PDF File 2032514.pdf | 684 kB | Shaun Ewing | Mar 03, 1936 00:00 |
|
US-2032514-A // Gas-filled tube and circuit therefor // Swart Leland Kasson // American Telephone & Telegraph | |||
| Version 1 (current) | 684 kB | Shaun Ewing | Mar 03, 1936 00:00 | US-2032514-A // Gas-filled tube and circuit therefor // Swart Leland Kasson // American Telephone & Telegraph | ||||
| PDF File 2030181.pdf | 683 kB | Shaun Ewing | Feb 11, 1936 00:00 |
|
US-2030181-A // Directional radio signaling // Potter Ralph Kimball // American Telephone & Telegraph | |||
| Version 1 (current) | 683 kB | Shaun Ewing | Feb 11, 1936 00:00 | US-2030181-A // Directional radio signaling // Potter Ralph Kimball // American Telephone & Telegraph | ||||
| PDF File 1857258.pdf | 683 kB | Shaun Ewing | May 10, 1932 00:00 |
|
US-1857258-A // Transmission system // Rea Wilton T. // American Telephone & Telegraph | |||
| Version 1 (current) | 683 kB | Shaun Ewing | May 10, 1932 00:00 | US-1857258-A // Transmission system // Rea Wilton T. // American Telephone & Telegraph |
