Issued Patents 2022
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11492232 | Elevator balance weight rescue device, an elevator and an elevator balance weight rescue method | Qing Li, Kai Kang, ShengYu Wang, Jianjia Li | 2022-11-08 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11492232 | Elevator balance weight rescue device, an elevator and an elevator balance weight rescue method | Qing Li, Kai Kang, ShengYu Wang, Jianjia Li | 2022-11-08 |