Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4846128 | Ignition timing control system for internal combustion engine | Yoshiaki Hirosawa, Makoto Kawai, Yorihisa Yamamoto, Haruhiko Yoshikawa, Kenichi Nakamura | 1989-07-11 |
SY
Shizuo Yagi
Overall (1989): #56,521 of 140,708Top 45%
1
Patents 1989