Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5304262 | Two-piece oil ring for use in internal combustion engine, steel wire of modified cross-section for use as material of the oil ring and method of producing the steel wire | Takao Karaoke, Ken Nakamura | 1994-04-19 |