Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11505426 | Brake device, a test method for the brake device and an elevator system | Guosong Li, Hua Zhou | 2022-11-22 |
| 10975927 | Brake device for elevator and an elevator system | Guochen Gao, Ruguang Liu | 2021-04-13 |