Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12292055 | Combined blade device and combined air outlet device | Ping Zhang, Shanxian Hu, Xinglin Sun, Yelin Sun, Lanying Luo | 2025-05-06 |
| 11325810 | Traction sheave safety device and elevator car emergency stop method thereof | Jianwen Cao, He Zhang, Wenna Fang, Wei Zhou, Yu Cao +2 more | 2022-05-10 |