Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5327275 | Switching system of optical transmission lines for protecting from trouble | Naonobu Fujimoto, Takashi Kihara, Takeo Fukushima, Koichi Nishimura, Hatsumi Iino | 1994-07-05 |