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 1568145.pdf | 432 kB | Shaun Ewing | Jan 05, 1926 00:00 |
|
US-1568145-A // Frequency filter for electric currents // Elsasser Henry W. // American Telephone & Telegraph | |||
| Version 1 (current) | 432 kB | Shaun Ewing | Jan 05, 1926 00:00 | US-1568145-A // Frequency filter for electric currents // Elsasser Henry W. // American Telephone & Telegraph | ||||
| PDF File 1568861.pdf | 552 kB | Shaun Ewing | Jan 05, 1926 00:00 |
|
US-1568861-A // Repeater circuit // Affel Herman A. // American Telephone & Telegraph | |||
| Version 1 (current) | 552 kB | Shaun Ewing | Jan 05, 1926 00:00 | US-1568861-A // Repeater circuit // Affel Herman A. // American Telephone & Telegraph | ||||
| PDF File 1568891.pdf | 625 kB | Shaun Ewing | Jan 05, 1926 00:00 |
|
US-1568891-A // Repeater circuits // Espenschied Lloyd // American Telephone & Telegraph | |||
| Version 1 (current) | 625 kB | Shaun Ewing | Jan 05, 1926 00:00 | US-1568891-A // Repeater circuits // Espenschied Lloyd // American Telephone & Telegraph | ||||
| PDF File 1568991.pdf | 582 kB | Shaun Ewing | Jan 12, 1926 00:00 |
|
US-1568991-A // Ciphering and deciphering device // Morehouse Lyman F. // American Telephone & Telegraph | |||
| Version 1 (current) | 582 kB | Shaun Ewing | Jan 12, 1926 00:00 | US-1568991-A // Ciphering and deciphering device // Morehouse Lyman F. // American Telephone & Telegraph | ||||
| PDF File 1568996.pdf | 933 kB | Shaun Ewing | Jan 12, 1926 00:00 |
|
US-1568996-A // Electrical measuring apparatus // Best Fred H. // American Telephone & Telegraph | |||
| Version 1 (current) | 933 kB | Shaun Ewing | Jan 12, 1926 00:00 | US-1568996-A // Electrical measuring apparatus // Best Fred H. // American Telephone & Telegraph | ||||
| PDF File 1569001.pdf | 746 kB | Shaun Ewing | Jan 12, 1926 00:00 |
|
US-1569001-A // Electrical measuring apparatus // Clark Alva Benson ; Crisson George // American Telephone & Telegraph | |||
| Version 1 (current) | 746 kB | Shaun Ewing | Jan 12, 1926 00:00 | US-1569001-A // Electrical measuring apparatus // Clark Alva Benson ; Crisson George // American Telephone & Telegraph | ||||
| PDF File 1569034.pdf | 592 kB | Shaun Ewing | Jan 12, 1926 00:00 |
|
US-1569034-A // Machine-switching telephone-exchange system // Rhodes William A. // American Telephone & Telegraph | |||
| Version 1 (current) | 592 kB | Shaun Ewing | Jan 12, 1926 00:00 | US-1569034-A // Machine-switching telephone-exchange system // Rhodes William A. // American Telephone & Telegraph | ||||
| PDF File 1569055.pdf | 274 kB | Shaun Ewing | Jan 12, 1926 00:00 |
|
US-1569055-A // Telegraph circuit // Weaver Allan // American Telephone & Telegraph | |||
| Version 1 (current) | 274 kB | Shaun Ewing | Jan 12, 1926 00:00 | US-1569055-A // Telegraph circuit // Weaver Allan // American Telephone & Telegraph | ||||
| PDF File 1569874.pdf | 237 kB | Shaun Ewing | Jan 19, 1926 00:00 |
|
US-1569874-A // Indicating means for calling dials // Newby Neal D. // American Telephone & Telegraph | |||
| Version 1 (current) | 237 kB | Shaun Ewing | Jan 19, 1926 00:00 | US-1569874-A // Indicating means for calling dials // Newby Neal D. // American Telephone & Telegraph | ||||
| PDF File 1569898.pdf | 510 kB | Shaun Ewing | Jan 19, 1926 00:00 |
|
US-1569898-A // Signaling system // Toomey John F. // American Telephone & Telegraph | |||
| Version 1 (current) | 510 kB | Shaun Ewing | Jan 19, 1926 00:00 | US-1569898-A // Signaling system // Toomey John F. // American Telephone & Telegraph | ||||
| PDF File 1569905.pdf | 351 kB | Shaun Ewing | Jan 19, 1926 00:00 |
|
US-1569905-A // Method and apparatus for neutralizing radiointerference on wire lines // Affel Herman A. ; Ilgenfritz Lester M. // American Telephone & Telegraph | |||
| Version 1 (current) | 351 kB | Shaun Ewing | Jan 19, 1926 00:00 | US-1569905-A // Method and apparatus for neutralizing radiointerference on wire lines // Affel Herman A. ; Ilgenfritz Lester M. // American Telephone & Telegraph | ||||
| PDF File 1569936.pdf | 830 kB | Shaun Ewing | Jan 19, 1926 00:00 |
|
US-1569936-A // Machine-switching system // Land Edmund // American Telephone & Telegraph | |||
| Version 1 (current) | 830 kB | Shaun Ewing | Jan 19, 1926 00:00 | US-1569936-A // Machine-switching system // Land Edmund // American Telephone & Telegraph | ||||
| PDF File 1570741.pdf | 1.06 MB | Shaun Ewing | Jan 26, 1926 00:00 |
|
US-1570741-A // Testing system for machine-switching circuits // Harden William H. ; Graefenecker Michael A. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.06 MB | Shaun Ewing | Jan 26, 1926 00:00 | US-1570741-A // Testing system for machine-switching circuits // Harden William H. ; Graefenecker Michael A. // American Telephone & Telegraph | ||||
| PDF File 1570755.pdf | 326 kB | Shaun Ewing | Jan 26, 1926 00:00 |
|
US-1570755-A // Radio ringing system // Loynes Owen H. // American Telephone & Telegraph | |||
| Version 1 (current) | 326 kB | Shaun Ewing | Jan 26, 1926 00:00 | US-1570755-A // Radio ringing system // Loynes Owen H. // American Telephone & Telegraph | ||||
| PDF File 1570770.pdf | 653 kB | Shaun Ewing | Jan 26, 1926 00:00 |
|
US-1570770-A // Means for and method of reducing interference // Nyquist Harry // American Telephone & Telegraph | |||
| Version 1 (current) | 653 kB | Shaun Ewing | Jan 26, 1926 00:00 | US-1570770-A // Means for and method of reducing interference // Nyquist Harry // American Telephone & Telegraph | ||||
| PDF File 1570771.pdf | 1.62 MB | Shaun Ewing | Jan 26, 1926 00:00 |
|
US-1570771-A // Means for and method of reducing interference // Nyquist Harry // American Telephone & Telegraph | |||
| Version 1 (current) | 1.62 MB | Shaun Ewing | Jan 26, 1926 00:00 | US-1570771-A // Means for and method of reducing interference // Nyquist Harry // American Telephone & Telegraph | ||||
| PDF File 1570772.pdf | 474 kB | Shaun Ewing | Jan 26, 1926 00:00 |
|
US-1570772-A // Reduction of distortion in multiplex repeaters // Nyquist Harry // American Telephone & Telegraph | |||
| Version 1 (current) | 474 kB | Shaun Ewing | Jan 26, 1926 00:00 | US-1570772-A // Reduction of distortion in multiplex repeaters // Nyquist Harry // American Telephone & Telegraph | ||||
| PDF File 1571513.pdf | 140 kB | Shaun Ewing | Feb 02, 1926 00:00 |
|
US-1571513-A // Telephone substation circuits // Edwards William H. // American Telephone & Telegraph | |||
| Version 1 (current) | 140 kB | Shaun Ewing | Feb 02, 1926 00:00 | US-1571513-A // Telephone substation circuits // Edwards William H. // American Telephone & Telegraph | ||||
| PDF File 1571991.pdf | 1.07 MB | Shaun Ewing | Feb 09, 1926 00:00 |
|
US-1571991-A // Telephone ringing system // Bailey Rand S. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.07 MB | Shaun Ewing | Feb 09, 1926 00:00 | US-1571991-A // Telephone ringing system // Bailey Rand S. // American Telephone & Telegraph | ||||
| PDF File 1572010.pdf | 489 kB | Shaun Ewing | Feb 09, 1926 00:00 |
|
US-1572010-A // Detector circuit // Herman Joseph // American Telephone & Telegraph | |||
| Version 1 (current) | 489 kB | Shaun Ewing | Feb 09, 1926 00:00 | US-1572010-A // Detector circuit // Herman Joseph // American Telephone & Telegraph |
