Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5042035 | Method and apparatus for controlling fault-state displaying of a subscriber's card in switching system | — | 1991-08-20 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5042035 | Method and apparatus for controlling fault-state displaying of a subscriber's card in switching system | — | 1991-08-20 |