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Your search returned 74 patents.
( 370/371 in Current US Classification ) |
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| Patent ID | Title | Date Filed |
| 4170718 | Immediate ring-back control system for time-division telephone exchange
| December 29, 1977 |
| 4152548 | Immediate ring-back control system for time-division telephone exchange
| December 13, 1977 |
| 4123624 | Switching network for a PCM TDM system
| May 10, 1977 |
| 4114143 | Modular switching system
| May 12, 1977 |
| 4101737 | Control arrangement in a time-space-time (t-s-t) time division multiple (t.d.m.) telecommunication switching system
| June 24, 1976 |
| 4081610 | Fast access antiphase control memory for digital data switches
| March 14, 1975 |
| 4064369 | Method and apparatus for path testing in a time division multiplex switching network
| January 31, 1975 |
| 4038497 | Hardwired marker for time folded TST switch with distributed control logic and automatic path finding, set up and release
| May 12, 1975 |
| 4005272 | Time folded TST (time space time) switch
| August 14, 1974 |
| 3983330 | TDM switching network for coded messages
| April 11, 1975 |
| 3970794 | PCM time-division multiplex telecommunication network
| March 26, 1974 |
| 3956593 | Time space time (TST) switch with combined and distributed state store and control store
| October 15, 1974 |
| 3937935 | Fault detection process and system for a time-division switching network
| November 6, 1974 |
| 3927267 | Time division switching system of the "time-space-time" type
| April 8, 1974 |
| 3914552 | PCM time-division multiplex switching procedure
| March 26, 1974 |
| 3909562 | Switching network testing process and arrangement
| September 12, 1974 |
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