Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4362341 | Low-noise level internal combustion engine | Yasuo Matsumoto | 1982-12-07 |
| 4350129 | Spark-ignition internal combustion engine capable of preventing noxious gas emissions | Yasuo Nakajima, Shin-ichi Nagumo, Tooru Yoshimura | 1982-09-21 |