Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4807574 | Valve operating device for internal combustion engine | Mitsuhiro Shibata, Koichi Fukuo, Toshiaki Hiro, Masahiko Matsumoto | 1989-02-28 |
KK
Kazuhide Kumagai
Overall (1989): #90,444 of 140,708Top 65%
1
Patents 1989