Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5343464 | Switching system between working transmission lines and protection transmission line | Hatsumi Iino | 1994-08-30 |
| 5327275 | Switching system of optical transmission lines for protecting from trouble | Kazuo Yamane, Naonobu Fujimoto, Takashi Kihara, Koichi Nishimura, Hatsumi Iino | 1994-07-05 |
| 5282193 | Maintenance signal transmission system | Hatsumi Iino, Koichi Nishimura | 1994-01-25 |