Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5888108 | Propulsion system for marine drive | — | 1999-03-30 |
| 5800223 | Marine propulsion device | Yoshitsugu Sumino | 1998-09-01 |
| 5529520 | Propulsion system for marine vessel | Takashi Iwashita, Yoshitugu Sumino, Hiroshi Harada | 1996-06-25 |
| 5310371 | Tandem propeller assembly for a marine propulsion unit | Yoshitsugu Sumino, Mitsunori Suzuki, Hiroshi Harada | 1994-05-10 |