Issued Patents 2011
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7980232 | Four stroke internal combustion engine | Yoshiyuki Higaki, Osamu Takii | 2011-07-19 |
HS
Hirofumi Serikawa
Overall (2011): #285,179 of 364,097Top 80%
1
Patents 2011