Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7077402 | Combined oil ring | Seiji Tamaki, Masami Kawasaki | 2006-07-18 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7077402 | Combined oil ring | Seiji Tamaki, Masami Kawasaki | 2006-07-18 |