Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4532818 | Clutch interlocking mechanism | Yoshio Tanaka, Yasuhisa Nishikawa, Takashi Koizumi | 1985-08-06 |
| 4478098 | Pushbutton tuner | Yasuhisa Nishikawa, Yoshio Tanaka, Takashi Koizumi | 1984-10-23 |
| 4348911 | Pushbutton | Yoshio Tanaka, Yasuhisa Nishikawa | 1982-09-14 |
| 4275606 | Pushbutton tuner | Yasuhisa Nishikawa | 1981-06-30 |