Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4846124 | Engine with a balancer mechanism | Hitoshi Suzuki, Tomohiro Hirano, Yoshimi Watanabe | 1989-07-11 |
| 4840152 | V-type vertical engine | Yoshimi Watanabe, Shinichi Miyakoshi | 1989-06-20 |