Issued Patents 2003
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6553957 | Combination of cylinder liner and piston ring of internal combustion engine | Yoshiki Ishikawa, Hideyo Iwama, Yoshio Naito, Takashi Takakura, Tatsuya Suzuki | 2003-04-29 |