Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4749269 | Lens drive device | Shigeo Nakashima, Hiroshi Yamamoto | 1988-06-07 |
| 4720650 | Motor | Hiroshi Yamamoto | 1988-01-19 |
| 4693580 | Motor | Shigeo Nakashima, Hiroshi Yamamoto | 1987-09-15 |
| 4682854 | Lens barrel incorporating a motor | Hiroshi Yamamoto | 1987-07-28 |