Issued Patents 2019
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10280817 | Variable valve mechanism of internal combustion engine | Akira Sugiura | 2019-05-07 |
| 10240489 | Variable valve mechanism of internal combustion engine | Akira Sugiura | 2019-03-26 |