Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889085 | Valve operating device for internal combustion engine | Toru Yagi, Yoshihiro Fujiyoshi, Takatoshi Aoki | 1989-12-26 |
| 4873949 | Method of and apparatus for controlling valve operation in an internal combustion engine | Yoshihiro Fujiyoshi, Takatoshi Aoki | 1989-10-17 |
| 4862843 | Valve timing control device for use in internal combustion engine | Michio Kawamoto, Yoshihiro Fujiyoshi, Takatoshi Aoki | 1989-09-05 |