Issued Patents 2021
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11203511 | Traction system for elevator and elevator system | WeiHua Yuan, Changke Yang | 2021-12-21 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11203511 | Traction system for elevator and elevator system | WeiHua Yuan, Changke Yang | 2021-12-21 |