Issued Patents 1982
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4364299 | Electronic musical instrument having system for judging player's performance | Akira Nakada, Eisaku Okamoto | 1982-12-21 |
| 4345501 | Automatic performance tempo control device | Akira Nakada, Eisaku Okamoto | 1982-08-24 |
| 4344344 | Electronic musical instrument having musical performance training system | Akira Nakada, Toshio Sugiura, Eisaku Okamoto | 1982-08-17 |