Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5241928 | Movable valve device for engine | Masato KASAI, Yasuyuki Osumi, Kiyomi Yamashita, Yoshihiko Ito | 1993-09-07 |
| 4969427 | Cylinder head of a four-cycle engine | — | 1990-11-13 |