Issued Patents 1982
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4364644 | Gauss type large aperture photographic objective | — | 1982-12-21 |
| 4340279 | Rear attachment lens | — | 1982-07-20 |
| 4329022 | Two group type zoom lens with wide image angle | Shin Yamaguchi, Akira Tajima | 1982-05-11 |
| 4310222 | Retro-focus type wide angle lens | — | 1982-01-12 |