Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883024 | Water-cooling system for a water-cooled horizontal cylinder engine | Ryoichi Ito, Koji Iwai, Junji Kimura | 1989-11-28 |
| 4825816 | Engine with forced air-cooling | Kiichiro Yamada | 1989-05-02 |