Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874233 | Diaphragm control device for interchangeable lens | Hiroshi Yamomoto, Katumi Yoshida | 1989-10-17 |
| 4832092 | Weight-operated filling system of rotary type | Hideaki Hirose, Toru Kohashi | 1989-05-23 |
| 4806813 | Motor | Akiyasu Sumi, Akira Kurosawa, Tohru Takahashi, Yoshitaka Kondoh, Tatsuo Chigira | 1989-02-21 |