Issued Patents 2020
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10865074 | Handrail automatically tensioning system and a method for adjusting tension level of handrail | QingXi Cai, Jianguo Li, Xin Wei, Jie Hu, Lifei Cheng +1 more | 2020-12-15 |