Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D290111 | Disc player | Kazuhiko Kawano, Juichi Yamamoto | 1987-06-02 |
| D272151 | Audio tuner | Hirotaka Imai | 1984-01-10 |
| D271694 | Audio amplifier | Hirotaka Imai | 1983-12-06 |
| D266508 | Tuner | Jun Yamamoto, Noboru Keitoku | 1982-10-12 |