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 1671130.pdf | 725 kB | Shaun Ewing | May 29, 1928 00:00 |
|
US-1671130-A // Grid circuits of electron tubes // Shackleton Samuel P. // American Telephone & Telegraph | |||
| Version 1 (current) | 725 kB | Shaun Ewing | May 29, 1928 00:00 | US-1671130-A // Grid circuits of electron tubes // Shackleton Samuel P. // American Telephone & Telegraph | ||||
| PDF File 1773119.pdf | 724 kB | Shaun Ewing | Aug 19, 1930 00:00 |
|
US-1773119-A // Electrooptical transmission system // Reynolds Frederick W. // American Telephone & Telegraph | |||
| Version 1 (current) | 724 kB | Shaun Ewing | Aug 19, 1930 00:00 | US-1773119-A // Electrooptical transmission system // Reynolds Frederick W. // American Telephone & Telegraph | ||||
| PDF File 1406246.pdf | 723 kB | Shaun Ewing | Feb 14, 1922 00:00 |
|
US-1406246-A // Testing and adjusting apparatus for cord circuits // Toomey John F. // American Telephone & Telegraph | |||
| Version 1 (current) | 723 kB | Shaun Ewing | Feb 14, 1922 00:00 | US-1406246-A // Testing and adjusting apparatus for cord circuits // Toomey John F. // American Telephone & Telegraph | ||||
| PDF File 1705551.pdf | 722 kB | Shaun Ewing | Mar 19, 1929 00:00 |
|
US-1705551-A // Electrooptical transmission // Abraham Leonard G. // American Telephone & Telegraph | |||
| Version 1 (current) | 722 kB | Shaun Ewing | Mar 19, 1929 00:00 | US-1705551-A // Electrooptical transmission // Abraham Leonard G. // American Telephone & Telegraph | ||||
| PDF File 1594432.pdf | 720 kB | Shaun Ewing | Aug 03, 1926 00:00 |
|
US-1594432-A // Telephone system // Toomey John F. // American Telephone & Telegraph | |||
| Version 1 (current) | 720 kB | Shaun Ewing | Aug 03, 1926 00:00 | US-1594432-A // Telephone system // Toomey John F. // American Telephone & Telegraph | ||||
| PDF File 1751510.pdf | 719 kB | Shaun Ewing | Mar 25, 1930 00:00 |
|
US-1751510-A // Method and apparatus for making joints // Cunningham James // American Telephone & Telegraph | |||
| Version 1 (current) | 719 kB | Shaun Ewing | Mar 25, 1930 00:00 | US-1751510-A // Method and apparatus for making joints // Cunningham James // American Telephone & Telegraph | ||||
| PDF File 1599445.pdf | 718 kB | Shaun Ewing | Sept 14, 1926 00:00 |
|
US-1599445-A // Alternating-current printing-telegraph system // Watson Edward F. // American Telephone & Telegraph | |||
| Version 1 (current) | 718 kB | Shaun Ewing | Sept 14, 1926 00:00 | US-1599445-A // Alternating-current printing-telegraph system // Watson Edward F. // American Telephone & Telegraph | ||||
| PDF File 1688455.pdf | 717 kB | Shaun Ewing | Oct 23, 1928 00:00 |
|
US-1688455-A // Telephone signaling system // Demarest Charles S. ; Loynes Owen H. // American Telephone & Telegraph | |||
| Version 1 (current) | 717 kB | Shaun Ewing | Oct 23, 1928 00:00 | US-1688455-A // Telephone signaling system // Demarest Charles S. ; Loynes Owen H. // American Telephone & Telegraph | ||||
| PDF File 1366414.pdf | 716 kB | Shaun Ewing | Jan 25, 1921 00:00 |
|
US-1366414-A // Means for and method of measuring weak currents // Osborne Harold S. ; Martin William H. // American Telephone & Telegraph | |||
| Version 1 (current) | 716 kB | Shaun Ewing | Jan 25, 1921 00:00 | US-1366414-A // Means for and method of measuring weak currents // Osborne Harold S. ; Martin William H. // American Telephone & Telegraph | ||||
| PDF File 1690182.pdf | 716 kB | Shaun Ewing | Nov 06, 1928 00:00 |
|
US-1690182-A // Suppression of echoes and singing in four-wire circuits // Silent Harold C. // American Telephone & Telegraph | |||
| Version 1 (current) | 716 kB | Shaun Ewing | Nov 06, 1928 00:00 | US-1690182-A // Suppression of echoes and singing in four-wire circuits // Silent Harold C. // American Telephone & Telegraph | ||||
| PDF File 1511015.pdf | 715 kB | Shaun Ewing | Oct 07, 1924 00:00 |
|
US-1511015-A // Transmission regulation // Affel Herman A. // American Telephone & Telegraph | |||
| Version 1 (current) | 715 kB | Shaun Ewing | Oct 07, 1924 00:00 | US-1511015-A // Transmission regulation // Affel Herman A. // American Telephone & Telegraph | ||||
| PDF File 1463200.pdf | 715 kB | Shaun Ewing | Jul 31, 1923 00:00 |
|
US-1463200-A // Ringing arrangement for multiplex circuits // Jr. John Davidson, // American Telephone & Telegraph | |||
| Version 1 (current) | 715 kB | Shaun Ewing | Jul 31, 1923 00:00 | US-1463200-A // Ringing arrangement for multiplex circuits // Jr. John Davidson, // American Telephone & Telegraph | ||||
| PDF File 1748166.pdf | 714 kB | Shaun Ewing | Feb 25, 1930 00:00 |
|
US-1748166-A // Telephone-exchange system // Bascom Henry M. ; Haines William T. // American Telephone & Telegraph | |||
| Version 1 (current) | 714 kB | Shaun Ewing | Feb 25, 1930 00:00 | US-1748166-A // Telephone-exchange system // Bascom Henry M. ; Haines William T. // American Telephone & Telegraph | ||||
| PDF File 1504124.pdf | 714 kB | Shaun Ewing | Aug 05, 1924 00:00 |
|
US-1504124-A // Electrical testing system // Kuhn George W. // American Telephone & Telegraph | |||
| Version 1 (current) | 714 kB | Shaun Ewing | Aug 05, 1924 00:00 | US-1504124-A // Electrical testing system // Kuhn George W. // American Telephone & Telegraph | ||||
| PDF File 1668674.pdf | 712 kB | Shaun Ewing | May 08, 1928 00:00 |
|
US-1668674-A // Directive radio repeating system // Espenschied Lloyd ; Martin De Loss K. // American Telephone & Telegraph | |||
| Version 1 (current) | 712 kB | Shaun Ewing | May 08, 1928 00:00 | US-1668674-A // Directive radio repeating system // Espenschied Lloyd ; Martin De Loss K. // American Telephone & Telegraph | ||||
| PDF File 1561532.pdf | 711 kB | Shaun Ewing | Nov 17, 1925 00:00 |
|
US-1561532-A // Telegraph system // Cory Samuel I. // American Telephone & Telegraph | |||
| Version 1 (current) | 711 kB | Shaun Ewing | Nov 17, 1925 00:00 | US-1561532-A // Telegraph system // Cory Samuel I. // American Telephone & Telegraph | ||||
| PDF File 1645607.pdf | 710 kB | Shaun Ewing | Oct 18, 1927 00:00 |
|
US-1645607-A // System of synchronizing signaling apparatus // Matte Andrew L. // American Telephone & Telegraph | |||
| Version 1 (current) | 710 kB | Shaun Ewing | Oct 18, 1927 00:00 | US-1645607-A // System of synchronizing signaling apparatus // Matte Andrew L. // American Telephone & Telegraph | ||||
| PDF File 1751516.pdf | 709 kB | Shaun Ewing | Mar 25, 1930 00:00 |
|
US-1751516-A // Common-frequency broadcasting system // Green Estill I. // American Telephone & Telegraph | |||
| Version 1 (current) | 709 kB | Shaun Ewing | Mar 25, 1930 00:00 | US-1751516-A // Common-frequency broadcasting system // Green Estill I. // American Telephone & Telegraph | ||||
| PDF File 1574780.pdf | 708 kB | Shaun Ewing | Mar 02, 1926 00:00 |
|
US-1574780-A // Means for and method of modulation // Affel Herman A. // American Telephone & Telegraph | |||
| Version 1 (current) | 708 kB | Shaun Ewing | Mar 02, 1926 00:00 | US-1574780-A // Means for and method of modulation // Affel Herman A. // American Telephone & Telegraph | ||||
| PDF File 1741926.pdf | 707 kB | Shaun Ewing | Dec 31, 1929 00:00 |
|
US-1741926-A // Compound loading system // French Norman R. // American Telephone & Telegraph | |||
| Version 1 (current) | 707 kB | Shaun Ewing | Dec 31, 1929 00:00 | US-1741926-A // Compound loading system // French Norman R. // American Telephone & Telegraph |
