Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883027 | Valve operating system for internal combustion engines | Tsuneo Tanai, Noriyuki Yamada, Tsutomu Saka, Toshiki Kobayashi | 1989-11-28 |
| 4796574 | SOHC type internal combustion engine | Noriaki Fujii, Takeshi Iwata | 1989-01-10 |