Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6726218 | Compression piston ring for use in internal combustion engine | Hideshi Hitosugi, Hideyo Iwama | 2004-04-27 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6726218 | Compression piston ring for use in internal combustion engine | Hideshi Hitosugi, Hideyo Iwama | 2004-04-27 |