Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10974930 | Traction sheave, pulley component and elevator having same | — | 2021-04-13 |
| 10975927 | Brake device for elevator and an elevator system | Zixu Zhang, Guochen Gao | 2021-04-13 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10974930 | Traction sheave, pulley component and elevator having same | — | 2021-04-13 |
| 10975927 | Brake device for elevator and an elevator system | Zixu Zhang, Guochen Gao | 2021-04-13 |