Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5631902 | Digital cross-connect system | — | 1997-05-20 |
| 5592467 | Network node cross-connection device using selectable memories for new connection in the event of failure | Yayoi Takeuchi | 1997-01-07 |