Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873953 | Induction port arrangement for internal combustion engine having multiple inlet valves per combustion chamber | Kouzaburou Ohkawa, Junichi Yokoyama, Yutaka Matayoshi, Shigeru Kamegaya | 1989-10-17 |
| 4825822 | Rocker arm arrangement for multi-valve internal combustion engine | Shigeru Kamegaya, Tooru Yoshimura, Yutaka Matayoshi | 1989-05-02 |