Issued Patents 2017
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9709169 | Piston ring | Toshikatsu Hayashi, Yoshinari Watanabe, Hayato Sasaki | 2017-07-18 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9709169 | Piston ring | Toshikatsu Hayashi, Yoshinari Watanabe, Hayato Sasaki | 2017-07-18 |