Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4856469 | Mechanical parts of valve driving mechanism for internal combustion engine | Ken-ichi Okazaki, Kazuo Satou | 1989-08-15 |
JY
Junichi Yamamoto
Overall (1989): #91,302 of 140,708Top 65%
1
Patents 1989