Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4313341 | Torque detecting system for internal combustion engine | Hiroaki Yamaguchi, Tadashi Hattori | 1982-02-02 |
| 4290301 | Knock detecting apparatus for internal combustion engine | Hiroaki Yamaguchi, Tadashi Hattori | 1981-09-22 |