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 1456556.pdf | 385 kB | Shaun Ewing | May 29, 1923 00:00 |
|
US-1456556-A // Duplex telegraph system // Hudson Earl A. // American Telephone & Telegraph | |||
| Version 1 (current) | 385 kB | Shaun Ewing | May 29, 1923 00:00 | US-1456556-A // Duplex telegraph system // Hudson Earl A. // American Telephone & Telegraph | ||||
| PDF File 1772506.pdf | 384 kB | Shaun Ewing | Aug 12, 1930 00:00 |
|
US-1772506-A // Wave filter // Affel Herman A. // American Telephone & Telegraph | |||
| Version 1 (current) | 384 kB | Shaun Ewing | Aug 12, 1930 00:00 | US-1772506-A // Wave filter // Affel Herman A. // American Telephone & Telegraph | ||||
| PDF File 1412853.pdf | 384 kB | Shaun Ewing | Apr 18, 1922 00:00 |
|
US-1412853-A // Synchronizing system // Espenschied Lloyd // American Telephone & Telegraph | |||
| Version 1 (current) | 384 kB | Shaun Ewing | Apr 18, 1922 00:00 | US-1412853-A // Synchronizing system // Espenschied Lloyd // American Telephone & Telegraph | ||||
| PDF File 1509901.pdf | 383 kB | Shaun Ewing | Sept 30, 1924 00:00 |
|
US-1509901-A // Electrical measuring system // Nyquist Harry // American Telephone & Telegraph | |||
| Version 1 (current) | 383 kB | Shaun Ewing | Sept 30, 1924 00:00 | US-1509901-A // Electrical measuring system // Nyquist Harry // American Telephone & Telegraph | ||||
| PDF File 1616499.pdf | 383 kB | Shaun Ewing | Feb 08, 1927 00:00 |
|
US-1616499-A // Linear measuring device // Jr. Mark King, // American Telephone & Telegraph | |||
| Version 1 (current) | 383 kB | Shaun Ewing | Feb 08, 1927 00:00 | US-1616499-A // Linear measuring device // Jr. Mark King, // American Telephone & Telegraph | ||||
| PDF File 1737992.pdf | 382 kB | Shaun Ewing | Dec 03, 1929 00:00 |
|
US-1737992-A // Volume-control system // Bostwick Lee G. // American Telephone & Telegraph | |||
| Version 1 (current) | 382 kB | Shaun Ewing | Dec 03, 1929 00:00 | US-1737992-A // Volume-control system // Bostwick Lee G. // American Telephone & Telegraph | ||||
| PDF File 1558521.pdf | 382 kB | Shaun Ewing | Oct 27, 1925 00:00 |
|
US-1558521-A // Telephone-exchange system // Nostitz Erich Von // American Telephone & Telegraph | |||
| Version 1 (current) | 382 kB | Shaun Ewing | Oct 27, 1925 00:00 | US-1558521-A // Telephone-exchange system // Nostitz Erich Von // American Telephone & Telegraph | ||||
| PDF File 1597790.pdf | 381 kB | Shaun Ewing | Aug 31, 1926 00:00 |
|
US-1597790-A // Multiplex signaling system // Herman Joseph // American Telephone & Telegraph | |||
| Version 1 (current) | 381 kB | Shaun Ewing | Aug 31, 1926 00:00 | US-1597790-A // Multiplex signaling system // Herman Joseph // American Telephone & Telegraph | ||||
| PDF File 1521685.pdf | 381 kB | Shaun Ewing | Jan 06, 1925 00:00 |
|
US-1521685-A // Carrier telegraph circuits // Hamilton Baxter P. // American Telephone & Telegraph | |||
| Version 1 (current) | 381 kB | Shaun Ewing | Jan 06, 1925 00:00 | US-1521685-A // Carrier telegraph circuits // Hamilton Baxter P. // American Telephone & Telegraph | ||||
| PDF File 1522581.pdf | 381 kB | Shaun Ewing | Jan 13, 1925 00:00 |
|
US-1522581-A // Radio broadcasting system // Espenschied Lloyd // American Telephone & Telegraph | |||
| Version 1 (current) | 381 kB | Shaun Ewing | Jan 13, 1925 00:00 | US-1522581-A // Radio broadcasting system // Espenschied Lloyd // American Telephone & Telegraph | ||||
| PDF File 1739520.pdf | 381 kB | Shaun Ewing | Dec 17, 1929 00:00 |
|
US-1739520-A // Radioreceiving circuits // Potter Ralph K. // American Telephone & Telegraph | |||
| Version 1 (current) | 381 kB | Shaun Ewing | Dec 17, 1929 00:00 | US-1739520-A // Radioreceiving circuits // Potter Ralph K. // American Telephone & Telegraph | ||||
| PDF File 1697903.pdf | 380 kB | Shaun Ewing | Jan 08, 1929 00:00 |
|
US-1697903-A // Transmission repeating system for radio and carrier telegraph systems // Clapp Robert H. // American Telephone & Telegraph | |||
| Version 1 (current) | 380 kB | Shaun Ewing | Jan 08, 1929 00:00 | US-1697903-A // Transmission repeating system for radio and carrier telegraph systems // Clapp Robert H. // American Telephone & Telegraph | ||||
| PDF File 1583854.pdf | 380 kB | Shaun Ewing | May 11, 1926 00:00 |
|
US-1583854-A // Volume-control apparatus // Perry Donald B. // American Telephone & Telegraph | |||
| Version 1 (current) | 380 kB | Shaun Ewing | May 11, 1926 00:00 | US-1583854-A // Volume-control apparatus // Perry Donald B. // American Telephone & Telegraph | ||||
| PDF File 1512953.pdf | 380 kB | Shaun Ewing | Oct 28, 1924 00:00 |
|
US-1512953-A // Arrangement for protecting electrical contacts // Shanck Roy B. // American Telephone & Telegraph | |||
| Version 1 (current) | 380 kB | Shaun Ewing | Oct 28, 1924 00:00 | US-1512953-A // Arrangement for protecting electrical contacts // Shanck Roy B. // American Telephone & Telegraph | ||||
| PDF File 1615913.pdf | 380 kB | Shaun Ewing | Feb 01, 1927 00:00 |
|
US-1615913-A // Radio direction-finding system // Osborne Harold S. // American Telephone & Telegraph | |||
| Version 1 (current) | 380 kB | Shaun Ewing | Feb 01, 1927 00:00 | US-1615913-A // Radio direction-finding system // Osborne Harold S. // American Telephone & Telegraph | ||||
| PDF File 1696417.pdf | 378 kB | Shaun Ewing | Dec 25, 1928 00:00 |
|
US-1696417-A // Voltage regulator // Roberts Leland C. // American Telephone & Telegraph | |||
| Version 1 (current) | 378 kB | Shaun Ewing | Dec 25, 1928 00:00 | US-1696417-A // Voltage regulator // Roberts Leland C. // American Telephone & Telegraph | ||||
| PDF File 1631143.pdf | 378 kB | Shaun Ewing | Jun 07, 1927 00:00 |
|
US-1631143-A // Deflection dynamometer // Matthews Edgar M. ; Carr James A. // American Telephone & Telegraph | |||
| Version 1 (current) | 378 kB | Shaun Ewing | Jun 07, 1927 00:00 | US-1631143-A // Deflection dynamometer // Matthews Edgar M. ; Carr James A. // American Telephone & Telegraph | ||||
| PDF File 1572992.pdf | 378 kB | Shaun Ewing | Feb 16, 1926 00:00 |
|
US-1572992-A // Adjustable electrical network // Crisson George ; Glezen Lee L. // American Telephone & Telegraph | |||
| Version 1 (current) | 378 kB | Shaun Ewing | Feb 16, 1926 00:00 | US-1572992-A // Adjustable electrical network // Crisson George ; Glezen Lee L. // American Telephone & Telegraph | ||||
| PDF File 1627701.pdf | 377 kB | Shaun Ewing | May 10, 1927 00:00 |
|
US-1627701-A // System for transmitting and reproducing pictures // Hall Merton C. // American Telephone & Telegraph | |||
| Version 1 (current) | 377 kB | Shaun Ewing | May 10, 1927 00:00 | US-1627701-A // System for transmitting and reproducing pictures // Hall Merton C. // American Telephone & Telegraph | ||||
| PDF File 1769962.pdf | 375 kB | Shaun Ewing | Jul 08, 1930 00:00 |
|
US-1769962-A // Apparatus for testing and repairing telephone circuits // Nyquist Harry // American Telephone & Telegraph | |||
| Version 1 (current) | 375 kB | Shaun Ewing | Jul 08, 1930 00:00 | US-1769962-A // Apparatus for testing and repairing telephone circuits // Nyquist Harry // American Telephone & Telegraph |
