Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7154897 | Gateway digital loop carrier device | — | 2006-12-26 |
| 5453989 | Subscriber digital transmission system | Hiroyuki Matsumoto, Eiji Shimose | 1995-09-26 |
| 5452286 | Digital transmission apparatus for subscribers having switching function from active transmission line to protection transmission line | — | 1995-09-19 |