Issued Patents 2017
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9644738 | Combination of cylinder and piston ring | Akira Kunimoto | 2017-05-09 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9644738 | Combination of cylinder and piston ring | Akira Kunimoto | 2017-05-09 |