Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4734547 | Reversing speed control switch | Hiroyuki Arai | 1988-03-29 |
| 4572997 | Trigger switch | Ken Yamanobe, Hiroyuki Arai | 1986-02-25 |
| 4219714 | Lock-off switch | Hideo Suzuki, Ken Matsumoto | 1980-08-26 |