Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5303465 | Method of assembling piston ring and method of assembling set oil ring and apparatus for assembling set oil ring | Hiroshi Ejiri, Yuji Tamai, Satoshi Takahashi, Naofumi Nagata | 1994-04-19 |