Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883027 | Valve operating system for internal combustion engines | Toshihiro Oikawa, Tsuneo Tanai, Noriyuki Yamada, Tsutomu Saka | 1989-11-28 |
TK
Toshiki Kobayashi
Overall (1989): #48,767 of 140,708Top 35%
1
Patents 1989