Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4846307 | Separate lubricating system of two cycle engine | Yukikazu Sumitomo | 1989-07-11 |
| 4831954 | Fin tab device for marine vessels | Hideto Yoshitake | 1989-05-23 |
| 4794897 | Engine control system of marine outboard engine | — | 1989-01-03 |