Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4881403 | Spark plug with pressure sensor | Junichi Kagawa, Kozo Amano | 1989-11-21 |
YS
Yoshiaki Saiki
Overall (1989): #40,396 of 140,708Top 30%
1
Patents 1989