Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870733 | Manufacturing method of a piston for an internal combustion engine | Yasuhiro Kawabata | 1989-10-03 |
SH
Soichi Hara
Overall (1989): #56,127 of 140,708Top 40%
1
Patents 1989