Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5619795 | Method for designing an oil ring | Ichiro Hirose | 1997-04-15 |
KM
Katsuya Miyoshi
Overall (1997): #122,474 of 185,788Top 70%
1
Patents 1997