Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4487288 | Muffler device of motorcycle | Jun Watanabe | 1984-12-11 |
| 4332574 | Motorcycle sprocket | Akira Nakaya | 1982-06-01 |
| 4316089 | Method of stabilizing operation of a hybrid spark chamber | — | 1982-02-16 |
| 4278147 | Muffler for engine, particularly motorcycle engine | Junichi Watanabe, Norio Gotoh | 1981-07-14 |