Issued Patents 2003
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6547251 | Ring groove for oil ring with coil expander of piston | Nobuyuki Murakami, Taro Itoh | 2003-04-15 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6547251 | Ring groove for oil ring with coil expander of piston | Nobuyuki Murakami, Taro Itoh | 2003-04-15 |