Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4206971 | Rear conversion lens | Yoshinari Hamanishi | 1980-06-10 |
| 4189212 | Wide angle zoom lens system | Norio Mizutani | 1980-02-19 |
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4206971 | Rear conversion lens | Yoshinari Hamanishi | 1980-06-10 |
| 4189212 | Wide angle zoom lens system | Norio Mizutani | 1980-02-19 |