Issued Patents 2021
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10913465 | Speed changing device | Tatsuya Ryuzaki, Junya Ono | 2021-02-09 |
SH
Seiji Hamaoka
Overall (2021): #268,992 of 548,734Top 50%
1
Patents 2021