Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4947198 | Finder optical system for single reflex cameras | Hirofumi Tsuchida | 1990-08-07 |
| 4906079 | Zoom lens system | Shinichi Mihara, Norihiko Aoki, Takeshi Hashimoto | 1990-03-06 |