Issued Patents 1982
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4334747 | Device for preventing spring-back of shutter blade | Fumio Shimada | 1982-06-15 |
| 4319823 | Electromagnetic driving device | — | 1982-03-16 |
| 4316662 | Brake device for shutter | Yoichi Tosaka, Nobuo Tezuka | 1982-02-23 |