Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4881501 | Diesel engine having shaped flame dispersing recess in piston crown | Motohiro Shinzawa | 1989-11-21 |
YS
Yoshiki Sekiya
Overall (1989): #40,320 of 140,708Top 30%
1
Patents 1989