Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4833355 | Motor with armature teeth and field magnet | — | 1989-05-23 |
| 4782259 | Frequency generator and motor with the same | Shuuichi Shikama, Toshiharu Yagi | 1988-11-01 |
| 4700098 | D.C. motors with unequal pole spacing | — | 1987-10-13 |