Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4854273 | Oil pressure control apparatus for an internal combustion engine | Eiji Nakai | 1989-08-08 |
| 4794893 | Engine valve driving apparatus | Shunji Masuda, Hiroyuki Oda | 1989-01-03 |