Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4606101 | Method of manufacturing a radially corrugated expander-spacer for a piston oil ring assembly | Koji Takeuchi | 1986-08-19 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4606101 | Method of manufacturing a radially corrugated expander-spacer for a piston oil ring assembly | Koji Takeuchi | 1986-08-19 |