Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4534625 | Lens tube for a high vari-focal ratio zoom lens | — | 1985-08-13 |
| 4515438 | Lens barrel | — | 1985-05-07 |
| 4283131 | Manual focus setting apparatus for photographic camera having automatic focus adjusting mechanism | Masashi Yamada | 1981-08-11 |