Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4251796 | Slide-type potentiometer | Katsuji Soeda, Mitsuhiro Oyama | 1981-02-17 |
| 4246521 | DC Motor speed control system | Katsuji Soeda, Mitsuhiro Oyama | 1981-01-20 |
| 4228383 | Speed control circuit arrangement for an AC commutator motor | Katsuji Soeda, Mitsuhiro Oyama, Tadashi Nakajima | 1980-10-14 |