Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4825833 | Engine control apparatus | Kenji Ikeura, Masami Nagano, Seiji Suda | 1989-05-02 |
| 4821194 | Cylinder combustion monitoring apparatus | — | 1989-04-11 |
YK
Yoshihisa Kawamura
Hitachi: 1 patents #814 of 2,935Top 30%
Overall (1989): #12,467 of 140,708Top 9%
2
Patents 1989