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 2635148.pdf | 13.49 MB | Shaun Ewing | Apr 14, 1953 00:00 |
|
US-2635148-A // Crossbar telephone system with marker release and lockout of defective line // Shepherd Judson O'D. // American Telephone And Telepho | |||
| Version 1 (current) | 13.49 MB | Shaun Ewing | Apr 14, 1953 00:00 | US-2635148-A // Crossbar telephone system with marker release and lockout of defective line // Shepherd Judson O'D. // American Telephone And Telepho | ||||
| PDF File 2638497.pdf | 1.27 MB | Shaun Ewing | May 12, 1953 00:00 |
|
US-2638497-A // Telegraph call transferring system // Martin Wade B. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.27 MB | Shaun Ewing | May 12, 1953 00:00 | US-2638497-A // Telegraph call transferring system // Martin Wade B. // American Telephone & Telegraph | ||||
| PDF File 2640193.pdf | 760 kB | Shaun Ewing | May 26, 1953 00:00 |
|
US-2640193-A // Radiant energy signaling system // Carter Robert William ; Currier Milton Griffith ; Emig William George ; Glentzer Kenneth Verley // American Telephone & Telegraph | |||
| Version 1 (current) | 760 kB | Shaun Ewing | May 26, 1953 00:00 | US-2640193-A // Radiant energy signaling system // Carter Robert William ; Currier Milton Griffith ; Emig William George ; Glentzer Kenneth Verley // American Telephone & Telegraph | ||||
| PDF File 2641644.pdf | 939 kB | Shaun Ewing | Jun 09, 1953 00:00 |
|
US-2641644-A // Printing suppression mechanism for teletypewriters // Beyland Sidney Warren // American Telephone & Telegraph | |||
| Version 1 (current) | 939 kB | Shaun Ewing | Jun 09, 1953 00:00 | US-2641644-A // Printing suppression mechanism for teletypewriters // Beyland Sidney Warren // American Telephone & Telegraph | ||||
| PDF File 2654807.pdf | 15.93 MB | Shaun Ewing | Oct 06, 1953 00:00 |
|
US-2654807-A // Marker for allotting a link and a sender // Shepherd Judson O'D. // American Telephone & Telegraph | |||
| Version 1 (current) | 15.93 MB | Shaun Ewing | Oct 06, 1953 00:00 | US-2654807-A // Marker for allotting a link and a sender // Shepherd Judson O'D. // American Telephone & Telegraph | ||||
| PDF File 2664466.pdf | 1.40 MB | Shaun Ewing | Dec 29, 1953 00:00 |
|
US-2664466-A // Multiway telegraph repeater system // Hanley Frank Harold // American Telephone & Telegraph | |||
| Version 1 (current) | 1.40 MB | Shaun Ewing | Dec 29, 1953 00:00 | US-2664466-A // Multiway telegraph repeater system // Hanley Frank Harold // American Telephone & Telegraph | ||||
| PDF File 2672522.pdf | 315 kB | Shaun Ewing | Mar 16, 1954 00:00 |
|
US-2672522-A // Delayed switchboard lamp system // Yeomans Lucien Osborn // American Telephone & Telegraph | |||
| Version 1 (current) | 315 kB | Shaun Ewing | Mar 16, 1954 00:00 | US-2672522-A // Delayed switchboard lamp system // Yeomans Lucien Osborn // American Telephone & Telegraph | ||||
| PDF File 2677011.pdf | 432 kB | Shaun Ewing | Apr 27, 1954 00:00 |
|
US-2677011-A // Teletypewriter message identification system // Burwell Gordon E. // American Telephone & Telegraph | |||
| Version 1 (current) | 432 kB | Shaun Ewing | Apr 27, 1954 00:00 | US-2677011-A // Teletypewriter message identification system // Burwell Gordon E. // American Telephone & Telegraph | ||||
| PDF File 2684997.pdf | 974 kB | Shaun Ewing | Jul 27, 1954 00:00 |
|
US-2684997-A // Telephone line finder circuit // Thompson Bert H. // American Telephone & Telegraph | |||
| Version 1 (current) | 974 kB | Shaun Ewing | Jul 27, 1954 00:00 | US-2684997-A // Telephone line finder circuit // Thompson Bert H. // American Telephone & Telegraph | ||||
| PDF File 2691064.pdf | 968 kB | Shaun Ewing | Oct 05, 1954 00:00 |
|
US-2691064-A // Measuring circuits // Shepherd Judson O'D. // American Telephone & Telegraph | |||
| Version 1 (current) | 968 kB | Shaun Ewing | Oct 05, 1954 00:00 | US-2691064-A // Measuring circuits // Shepherd Judson O'D. // American Telephone & Telegraph | ||||
| PDF File 2698879.pdf | 12.37 MB | Shaun Ewing | Jan 04, 1955 00:00 |
|
US-2698879-A // Class of service determining circuit // Shepherd Judson O'D. // American Telephone & Telegraph | |||
| Version 1 (current) | 12.37 MB | Shaun Ewing | Jan 04, 1955 00:00 | US-2698879-A // Class of service determining circuit // Shepherd Judson O'D. // American Telephone & Telegraph | ||||
| PDF File 2698880.pdf | 12.53 MB | Shaun Ewing | Jan 04, 1955 00:00 |
|
US-2698880-A // Calling line identifier // Shepherd Judson O'D. // American Telephone & Telegraph | |||
| Version 1 (current) | 12.53 MB | Shaun Ewing | Jan 04, 1955 00:00 | US-2698880-A // Calling line identifier // Shepherd Judson O'D. // American Telephone & Telegraph | ||||
| PDF File 2707778.pdf | 567 kB | Shaun Ewing | May 03, 1955 00:00 |
|
US-2707778-A // Control circuit with answer back and supervisory signals // Neiswinter James T. // American Telephone & Telegraph | |||
| Version 1 (current) | 567 kB | Shaun Ewing | May 03, 1955 00:00 | US-2707778-A // Control circuit with answer back and supervisory signals // Neiswinter James T. // American Telephone & Telegraph | ||||
| PDF File 2710891.pdf | 2.02 MB | Shaun Ewing | Jun 14, 1955 00:00 |
|
US-2710891-A // Telegraph service board circuits // Fitch Karl E. ; Neiswinter James T. ; Purvis Matthew R. ; Vanderlippe Richard A. // American Telephone & Telegraph ; Bell Telephone Labor Inc | |||
| Version 1 (current) | 2.02 MB | Shaun Ewing | Jun 14, 1955 00:00 | US-2710891-A // Telegraph service board circuits // Fitch Karl E. ; Neiswinter James T. ; Purvis Matthew R. ; Vanderlippe Richard A. // American Telephone & Telegraph ; Bell Telephone Labor Inc | ||||
| PDF File 2713087.pdf | 556 kB | Shaun Ewing | Jul 12, 1955 00:00 |
|
US-2713087-A // Full duplex telegraph repeater circuit // Neiswinter James T. // American Telephone & Telegraph | |||
| Version 1 (current) | 556 kB | Shaun Ewing | Jul 12, 1955 00:00 | US-2713087-A // Full duplex telegraph repeater circuit // Neiswinter James T. // American Telephone & Telegraph | ||||
| PDF File 2713122.pdf | 544 kB | Shaun Ewing | Jul 12, 1955 00:00 |
|
US-2713122-A // Automatic frequency control // Henley Edward Joseph // American Telephone & Telegraph | |||
| Version 1 (current) | 544 kB | Shaun Ewing | Jul 12, 1955 00:00 | US-2713122-A // Automatic frequency control // Henley Edward Joseph // American Telephone & Telegraph | ||||
| PDF File 2714701.pdf | 200 kB | Shaun Ewing | Aug 02, 1955 00:00 |
|
US-2714701-A // Voltage regulation circuit // Henley Edward Joseph // American Telephone & Telegraph | |||
| Version 1 (current) | 200 kB | Shaun Ewing | Aug 02, 1955 00:00 | US-2714701-A // Voltage regulation circuit // Henley Edward Joseph // American Telephone & Telegraph | ||||
| PDF File 2719232.pdf | 499 kB | Shaun Ewing | Sept 27, 1955 00:00 |
|
US-2719232-A // Method of calibrating an oscillator // Ehrlich Robert W. // American Telephone & Telegraph | |||
| Version 1 (current) | 499 kB | Shaun Ewing | Sept 27, 1955 00:00 | US-2719232-A // Method of calibrating an oscillator // Ehrlich Robert W. // American Telephone & Telegraph | ||||
| PDF File 2719878.pdf | 343 kB | Shaun Ewing | Oct 04, 1955 00:00 |
|
US-2719878-A // Alarm circuit for timed impulse supply conductors // Meachen Oren R. // American Telephone & Telegraph | |||
| Version 1 (current) | 343 kB | Shaun Ewing | Oct 04, 1955 00:00 | US-2719878-A // Alarm circuit for timed impulse supply conductors // Meachen Oren R. // American Telephone & Telegraph | ||||
| PDF File 2721894.pdf | 463 kB | Shaun Ewing | Oct 25, 1955 00:00 |
|
US-2721894-A // Telegraph loop loading // Hanley Frank Harold // American Telephone & Telegraph | |||
| Version 1 (current) | 463 kB | Shaun Ewing | Oct 25, 1955 00:00 | US-2721894-A // Telegraph loop loading // Hanley Frank Harold // American Telephone & Telegraph |
