|
| | |
|
Your search returned 26 patents.
( 379/17 in Current US Classification ) |
|
|
| 1 |
| Patent ID | Title | Date Filed |
| 4516076 | Fault detection arrangement for relay switching system
| September 17, 1982 |
| 4228328 | Signal distributor test arrangement
| August 13, 1979 |
| 4147901 | Relay margin test set
| December 12, 1977 |
| 4045623 | Short circuit indicator for a terminator matrix
| May 3, 1976 |
| 3971893 | Control system and process for a space-division switching network
| July 28, 1975 |
| 3941949 | Method and apparatus for isolating malfunctions occurring in sender-receiver communication switching system equipment
| February 27, 1974 |
| 3922499 | Communication switching system network control arrangement
| September 14, 1973 |
| 3919503 | Apparatus for establishing cross connections in an automated main distributing frame
| September 9, 1974 |
| 1 |
|
|
|
|
|
|
|
|
|
|
|