Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4858574 | Hydraulic circuit for a valve operating timing control device for an internal combustion engine | Koichi Fukuo, Mitsuhiro Shibata, Toshiaki Hiro | 1989-08-22 |
| 4807574 | Valve operating device for internal combustion engine | Mitsuhiro Shibata, Kazuhide Kumagai, Koichi Fukuo, Toshiaki Hiro | 1989-02-28 |