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 1897533.pdf | 368 kB | Shaun Ewing | Feb 14, 1933 00:00 |
|
US-1897533-A // Time control system for telephones // Richey Charles V. // American Telephone & Telegraph | |||
| Version 1 (current) | 368 kB | Shaun Ewing | Feb 14, 1933 00:00 | US-1897533-A // Time control system for telephones // Richey Charles V. // American Telephone & Telegraph | ||||
| PDF File 1831921.pdf | 368 kB | Shaun Ewing | Nov 17, 1931 00:00 |
|
US-1831921-A // Short wave radio antenna system // Martin De Loss K. // American Telephone & Telegraph | |||
| Version 1 (current) | 368 kB | Shaun Ewing | Nov 17, 1931 00:00 | US-1831921-A // Short wave radio antenna system // Martin De Loss K. // American Telephone & Telegraph | ||||
| PDF File 1869459.pdf | 367 kB | Shaun Ewing | Aug 02, 1932 00:00 |
|
US-1869459-A // Amplifying system // Bostwick Lee Gordon // American Telephone & Telegraph | |||
| Version 1 (current) | 367 kB | Shaun Ewing | Aug 02, 1932 00:00 | US-1869459-A // Amplifying system // Bostwick Lee Gordon // American Telephone & Telegraph | ||||
| PDF File 1809950.pdf | 366 kB | Shaun Ewing | Jun 16, 1931 00:00 |
|
US-1809950-A // Carrier telegraph system // Thorp Vaughn P. // American Telephone & Telegraph | |||
| Version 1 (current) | 366 kB | Shaun Ewing | Jun 16, 1931 00:00 | US-1809950-A // Carrier telegraph system // Thorp Vaughn P. // American Telephone & Telegraph | ||||
| PDF File 1930627.pdf | 366 kB | Shaun Ewing | Oct 17, 1933 00:00 |
|
US-1930627-A // Means for improving contact operation // Shanck Roy B. // American Telephone & Telegraph | |||
| Version 1 (current) | 366 kB | Shaun Ewing | Oct 17, 1933 00:00 | US-1930627-A // Means for improving contact operation // Shanck Roy B. // American Telephone & Telegraph | ||||
| PDF File 2019577.pdf | 366 kB | Shaun Ewing | Nov 05, 1935 00:00 |
|
US-2019577-A // System of variable amplification // Mitchell Doren ; Schott Lionel // American Telephone & Telegraph | |||
| Version 1 (current) | 366 kB | Shaun Ewing | Nov 05, 1935 00:00 | US-2019577-A // System of variable amplification // Mitchell Doren ; Schott Lionel // American Telephone & Telegraph | ||||
| PDF File 1811023.pdf | 366 kB | Shaun Ewing | Jun 23, 1931 00:00 |
|
US-1811023-A // Photo-electric cell // Potter Ralph K. // American Telephone & Telegraph | |||
| Version 1 (current) | 366 kB | Shaun Ewing | Jun 23, 1931 00:00 | US-1811023-A // Photo-electric cell // Potter Ralph K. // American Telephone & Telegraph | ||||
| PDF File 1889821.pdf | 365 kB | Shaun Ewing | Dec 06, 1932 00:00 |
|
US-1889821-A // Prevention of overhearing in program circuits // Chapman Arthur G. ; Mccurdy Ralph G. // American Telephone & Telegraph | |||
| Version 1 (current) | 365 kB | Shaun Ewing | Dec 06, 1932 00:00 | US-1889821-A // Prevention of overhearing in program circuits // Chapman Arthur G. ; Mccurdy Ralph G. // American Telephone & Telegraph | ||||
| PDF File 1958523.pdf | 365 kB | Shaun Ewing | May 15, 1934 00:00 |
|
US-1958523-A // Bias control in telegraph communication // Rea Wilton Treat // American Telephone & Telegraph | |||
| Version 1 (current) | 365 kB | Shaun Ewing | May 15, 1934 00:00 | US-1958523-A // Bias control in telegraph communication // Rea Wilton Treat // American Telephone & Telegraph | ||||
| PDF File 2093512.pdf | 364 kB | Shaun Ewing | Sept 21, 1937 00:00 |
|
US-2093512-A // Electrical measuring system // Bowen Arnold Everett // American Telephone & Telegraph | |||
| Version 1 (current) | 364 kB | Shaun Ewing | Sept 21, 1937 00:00 | US-2093512-A // Electrical measuring system // Bowen Arnold Everett // American Telephone & Telegraph | ||||
| PDF File 1994626.pdf | 364 kB | Shaun Ewing | Mar 19, 1935 00:00 |
|
US-1994626-A // Speed regulating device // Townsend George F. // American Telephone & Telegraph | |||
| Version 1 (current) | 364 kB | Shaun Ewing | Mar 19, 1935 00:00 | US-1994626-A // Speed regulating device // Townsend George F. // American Telephone & Telegraph | ||||
| PDF File 1836109.pdf | 363 kB | Shaun Ewing | Dec 15, 1931 00:00 |
|
US-1836109-A // Impedance modifying device // Edwards William H. // American Telephone & Telegraph | |||
| Version 1 (current) | 363 kB | Shaun Ewing | Dec 15, 1931 00:00 | US-1836109-A // Impedance modifying device // Edwards William H. // American Telephone & Telegraph | ||||
| PDF File 1942811.pdf | 363 kB | Shaun Ewing | Jan 09, 1934 00:00 |
|
US-1942811-A // Single stroke gong // Green Irving W. // American Telephone & Telegraph | |||
| Version 1 (current) | 363 kB | Shaun Ewing | Jan 09, 1934 00:00 | US-1942811-A // Single stroke gong // Green Irving W. // American Telephone & Telegraph | ||||
| PDF File 2040970.pdf | 363 kB | Shaun Ewing | May 19, 1936 00:00 |
|
US-2040970-A // Telephone transmission circuit // Abraham Leonard Gladstone ; Mitchell Doren // American Telephone & Telegraph | |||
| Version 1 (current) | 363 kB | Shaun Ewing | May 19, 1936 00:00 | US-2040970-A // Telephone transmission circuit // Abraham Leonard Gladstone ; Mitchell Doren // American Telephone & Telegraph | ||||
| PDF File 1976660.pdf | 362 kB | Shaun Ewing | Oct 09, 1934 00:00 |
|
US-1976660-A // Code calling system // Edwards William H. // American Telephone & Telegraph | |||
| Version 1 (current) | 362 kB | Shaun Ewing | Oct 09, 1934 00:00 | US-1976660-A // Code calling system // Edwards William H. // American Telephone & Telegraph | ||||
| PDF File 2015795.pdf | 361 kB | Shaun Ewing | Oct 01, 1935 00:00 |
|
US-2015795-A // Mounting for telephone coin collectors // Greene Morrill ; Halligan Burdette Joseph ; Jr. Richard Wagner, // American Telephone & Telegraph | |||
| Version 1 (current) | 361 kB | Shaun Ewing | Oct 01, 1935 00:00 | US-2015795-A // Mounting for telephone coin collectors // Greene Morrill ; Halligan Burdette Joseph ; Jr. Richard Wagner, // American Telephone & Telegraph | ||||
| PDF File 1904226.pdf | 361 kB | Shaun Ewing | Apr 18, 1933 00:00 |
|
US-1904226-A // Cable maintenance apparatus // Henneberger Thomas C. // American Telephone & Telegraph | |||
| Version 1 (current) | 361 kB | Shaun Ewing | Apr 18, 1933 00:00 | US-1904226-A // Cable maintenance apparatus // Henneberger Thomas C. // American Telephone & Telegraph | ||||
| PDF File 1827860.pdf | 361 kB | Shaun Ewing | Oct 20, 1931 00:00 |
|
US-1827860-A // Carrier telegraph system // Thorp Vaughn P. // American Telephone & Telegraph | |||
| Version 1 (current) | 361 kB | Shaun Ewing | Oct 20, 1931 00:00 | US-1827860-A // Carrier telegraph system // Thorp Vaughn P. // American Telephone & Telegraph | ||||
| PDF File 1809945.pdf | 360 kB | Shaun Ewing | Jun 16, 1931 00:00 |
|
US-1809945-A // Control arrangement for carrier apparatus // Rea Wilton T. // American Telephone & Telegraph | |||
| Version 1 (current) | 360 kB | Shaun Ewing | Jun 16, 1931 00:00 | US-1809945-A // Control arrangement for carrier apparatus // Rea Wilton T. // American Telephone & Telegraph | ||||
| PDF File 1841473.pdf | 359 kB | Shaun Ewing | Jan 19, 1932 00:00 |
|
US-1841473-A // Arrangement for connecting or terminating coaxial conductors // Green Estill I. // American Telephone & Telegraph | |||
| Version 1 (current) | 359 kB | Shaun Ewing | Jan 19, 1932 00:00 | US-1841473-A // Arrangement for connecting or terminating coaxial conductors // Green Estill I. // American Telephone & Telegraph |
