Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5663949 | Line protection switching system in duplexed fiber interface shelf | Ryoichi Ishibashi, Tomiko Ito, Kouki Mie | 1997-09-02 |
HK
Hiroya Kawasaki
Overall (1997): #141,847 of 185,788Top 80%
1
Patents 1997