Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4260223 | Lens system for photographing objects from infinity to a very short distance | — | 1981-04-07 |
| 4223981 | Telephoto zoom lens | Norio Mizutani | 1980-09-23 |
| 4206971 | Rear conversion lens | Soichi Nakamura | 1980-06-10 |