Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5271301 | Vibrating cutting tool | Yasuo Umemura, Osamu Date, Tsutomu Aoki, Fukuo Wakano, Hitomi Nakai | 1993-12-21 |
| 4566675 | Control device for an air hoist | Yoshiharu Kotone | 1986-01-28 |
| 4379492 | Torque control apparatus for pneumatic impact wrench | — | 1983-04-12 |