Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11203511 | Traction system for elevator and elevator system | Changke Yang, LiuDi Gong | 2021-12-21 |
| 10246297 | Rust removing device for elevator guide rail | YuHang Ou, ChunYan Yu, Jing Nie | 2019-04-02 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11203511 | Traction system for elevator and elevator system | Changke Yang, LiuDi Gong | 2021-12-21 |
| 10246297 | Rust removing device for elevator guide rail | YuHang Ou, ChunYan Yu, Jing Nie | 2019-04-02 |