Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11203511 | Traction system for elevator and elevator system | WeiHua Yuan, LiuDi Gong | 2021-12-21 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11203511 | Traction system for elevator and elevator system | WeiHua Yuan, LiuDi Gong | 2021-12-21 |