Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5193820 | Three-piece type oil ring assembly | Takeji Tsuchiya, Yukio Tateishi, Akira Takahashi | 1993-03-16 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5193820 | Three-piece type oil ring assembly | Takeji Tsuchiya, Yukio Tateishi, Akira Takahashi | 1993-03-16 |