Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4850908 | Drawing away device of bilge water for water jet propulsion | Seiji Inoue | 1989-07-25 |
| 4813898 | Water jet propulsion | Masayoshi Nanami, Seiji Inoue | 1989-03-21 |
| 4811560 | Exhaust system for marine propulsion | Masayoshi Nanami | 1989-03-14 |