Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10780839 | Telescopic mechanism | Xi-Hang Li, Hui Ju, Yan Yan | 2020-09-22 |
| 10676012 | Unpowered stop mechanism | Yan Yan, Jing Liu, Shun-Ming Wang, Zhen Zhang, Shi-Li Zhang +4 more | 2020-06-09 |