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 1593639.pdf | 530 kB | Shaun Ewing | Jul 27, 1926 00:00 |
|
US-1593639-A // Optical system // Reynolds Frederick W. // American Telephone & Telegraph | |||
| Version 1 (current) | 530 kB | Shaun Ewing | Jul 27, 1926 00:00 | US-1593639-A // Optical system // Reynolds Frederick W. // American Telephone & Telegraph | ||||
| PDF File 1724987.pdf | 529 kB | Shaun Ewing | Aug 20, 1929 00:00 |
|
US-1724987-A // Selective-constant-resistance network // Zobel Otto J. // American Telephone & Telegraph | |||
| Version 1 (current) | 529 kB | Shaun Ewing | Aug 20, 1929 00:00 | US-1724987-A // Selective-constant-resistance network // Zobel Otto J. // American Telephone & Telegraph | ||||
| PDF File 1466707.pdf | 529 kB | Shaun Ewing | Sept 04, 1923 00:00 |
|
US-1466707-A // Method of and apparatus for limiting the transmission of electrical energy // Espenschied Lloyd // American Telephone & Telegraph | |||
| Version 1 (current) | 529 kB | Shaun Ewing | Sept 04, 1923 00:00 | US-1466707-A // Method of and apparatus for limiting the transmission of electrical energy // Espenschied Lloyd // American Telephone & Telegraph | ||||
| PDF File 1736785.pdf | 529 kB | Shaun Ewing | Nov 26, 1929 00:00 |
|
US-1736785-A // Measuring system // Haines William T. // American Telephone & Telegraph | |||
| Version 1 (current) | 529 kB | Shaun Ewing | Nov 26, 1929 00:00 | US-1736785-A // Measuring system // Haines William T. // American Telephone & Telegraph | ||||
| PDF File 1752345.pdf | 529 kB | Shaun Ewing | Apr 01, 1930 00:00 |
|
US-1752345-A // Reduction of atmospheric disturbance // Kelley Leo A. // American Telephone & Telegraph | |||
| Version 1 (current) | 529 kB | Shaun Ewing | Apr 01, 1930 00:00 | US-1752345-A // Reduction of atmospheric disturbance // Kelley Leo A. // American Telephone & Telegraph | ||||
| PDF File 1654657.pdf | 529 kB | Shaun Ewing | Jan 03, 1928 00:00 |
|
US-1654657-A // Cable terminal // Matthews Edgar M. // American Telephone & Telegraph | |||
| Version 1 (current) | 529 kB | Shaun Ewing | Jan 03, 1928 00:00 | US-1654657-A // Cable terminal // Matthews Edgar M. // American Telephone & Telegraph | ||||
| PDF File 1727408.pdf | 528 kB | Shaun Ewing | Sept 10, 1929 00:00 |
|
US-1727408-A // Control of regeneration in signaling systems // Ohl Russell S. // American Telephone & Telegraph | |||
| Version 1 (current) | 528 kB | Shaun Ewing | Sept 10, 1929 00:00 | US-1727408-A // Control of regeneration in signaling systems // Ohl Russell S. // American Telephone & Telegraph | ||||
| PDF File 1667824.pdf | 527 kB | Shaun Ewing | May 01, 1928 00:00 |
|
US-1667824-A // Multiple-unit cable // Richey Archie L. // American Telephone & Telegraph | |||
| Version 1 (current) | 527 kB | Shaun Ewing | May 01, 1928 00:00 | US-1667824-A // Multiple-unit cable // Richey Archie L. // American Telephone & Telegraph | ||||
| PDF File 1422470.pdf | 527 kB | Shaun Ewing | Jul 11, 1922 00:00 |
|
US-1422470-A // Inductive-interference-suppression device // Osborne Harold S. // American Telephone & Telegraph | |||
| Version 1 (current) | 527 kB | Shaun Ewing | Jul 11, 1922 00:00 | US-1422470-A // Inductive-interference-suppression device // Osborne Harold S. // American Telephone & Telegraph | ||||
| PDF File 1784891.pdf | 527 kB | Shaun Ewing | Dec 16, 1930 00:00 |
|
US-1784891-A // Privacy signaling system // Dean Samuel W. ; Anderson Clifford N. // American Telephone & Telegraph | |||
| Version 1 (current) | 527 kB | Shaun Ewing | Dec 16, 1930 00:00 | US-1784891-A // Privacy signaling system // Dean Samuel W. ; Anderson Clifford N. // American Telephone & Telegraph | ||||
| PDF File 1568141.pdf | 527 kB | Shaun Ewing | Jan 05, 1926 00:00 |
|
US-1568141-A // Frequency selective circuits // Elsasser Henry W. // American Telephone & Telegraph | |||
| Version 1 (current) | 527 kB | Shaun Ewing | Jan 05, 1926 00:00 | US-1568141-A // Frequency selective circuits // Elsasser Henry W. // American Telephone & Telegraph | ||||
| PDF File 1648975.pdf | 526 kB | Shaun Ewing | Nov 15, 1927 00:00 |
|
US-1648975-A // Printing-telegraph-exchange system // Vernam Gilbert S. // American Telephone & Telegraph | |||
| Version 1 (current) | 526 kB | Shaun Ewing | Nov 15, 1927 00:00 | US-1648975-A // Printing-telegraph-exchange system // Vernam Gilbert S. // American Telephone & Telegraph | ||||
| PDF File 1578307.pdf | 526 kB | Shaun Ewing | Mar 30, 1926 00:00 |
|
US-1578307-A // Inductance coil // Zinn Manvel K. // American Telephone & Telegraph | |||
| Version 1 (current) | 526 kB | Shaun Ewing | Mar 30, 1926 00:00 | US-1578307-A // Inductance coil // Zinn Manvel K. // American Telephone & Telegraph | ||||
| PDF File 1483133.pdf | 526 kB | Shaun Ewing | Feb 12, 1924 00:00 |
|
US-1483133-A // Electrical testing system // Toomey John F. ; Crisson George // American Telephone & Telegraph | |||
| Version 1 (current) | 526 kB | Shaun Ewing | Feb 12, 1924 00:00 | US-1483133-A // Electrical testing system // Toomey John F. ; Crisson George // American Telephone & Telegraph | ||||
| PDF File 1483956.pdf | 525 kB | Shaun Ewing | Feb 19, 1924 00:00 |
|
US-1483956-A // Telephone system // Toomey John F. // American Telephone & Telegraph | |||
| Version 1 (current) | 525 kB | Shaun Ewing | Feb 19, 1924 00:00 | US-1483956-A // Telephone system // Toomey John F. // American Telephone & Telegraph | ||||
| PDF File 1364965.pdf | 525 kB | Shaun Ewing | Jan 11, 1921 00:00 |
|
US-1364965-A // Telephone-call-transfer system // Toomey John F. // American Telephone & Telegraph | |||
| Version 1 (current) | 525 kB | Shaun Ewing | Jan 11, 1921 00:00 | US-1364965-A // Telephone-call-transfer system // Toomey John F. // American Telephone & Telegraph | ||||
| PDF File 1664455.pdf | 524 kB | Shaun Ewing | Apr 03, 1928 00:00 |
|
US-1664455-A // Electrical translating circuit // King Robert W. // American Telephone & Telegraph | |||
| Version 1 (current) | 524 kB | Shaun Ewing | Apr 03, 1928 00:00 | US-1664455-A // Electrical translating circuit // King Robert W. // American Telephone & Telegraph | ||||
| PDF File 1575628.pdf | 524 kB | Shaun Ewing | Mar 09, 1926 00:00 |
|
US-1575628-A // Telegraph signaling system // Herman Joseph // American Telephone & Telegraph | |||
| Version 1 (current) | 524 kB | Shaun Ewing | Mar 09, 1926 00:00 | US-1575628-A // Telegraph signaling system // Herman Joseph // American Telephone & Telegraph | ||||
| PDF File 1749838.pdf | 522 kB | Shaun Ewing | Mar 11, 1930 00:00 |
|
US-1749838-A // Selective system // Niles Eliot W. // American Telephone & Telegraph | |||
| Version 1 (current) | 522 kB | Shaun Ewing | Mar 11, 1930 00:00 | US-1749838-A // Selective system // Niles Eliot W. // American Telephone & Telegraph | ||||
| PDF File 1368288.pdf | 522 kB | Shaun Ewing | Feb 15, 1921 00:00 |
|
US-1368288-A // Electromagnetic device // Pierce Ralph E. // American Telephone ; Telegraph Company | |||
| Version 1 (current) | 522 kB | Shaun Ewing | Feb 15, 1921 00:00 | US-1368288-A // Electromagnetic device // Pierce Ralph E. // American Telephone ; Telegraph Company |
