Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7934965 | Exhaust system for small watercraft | Hajime Shogase, Masatsugu Matsumoto, Junji Higashiyama | 2011-05-03 |
| 7886870 | Exhaust apparatus for small boat | Masatsugu Matsumoto | 2011-02-15 |