Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5663949 | Line protection switching system in duplexed fiber interface shelf | Tomiko Ito, Kouki Mie, Hiroya Kawasaki | 1997-09-02 |
| 5613065 | Information broadcasting system having reception error minimizing facility | Tetsuo Tachibana, Tatsuru Nakagaki | 1997-03-18 |