Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4234835 | Speed control apparatus for DC motor | Isao Yoshida, Hiromitsu Nakano | 1980-11-18 |
| 4189666 | Speed control system for small size D-C electric motor | Yoshio Tetsugu, Hiromitsu Nakano, Hiroshi Minakuchi, Tomio Oyama, Isao Yoshida +1 more | 1980-02-19 |