Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10906562 | Movable side wall and opening/closing mechanism for railroad boxcars | Donghua Xu, Haitao Liu, Fengwei Liu, Wenliang Liu, Chuanfeng Jing +4 more | 2021-02-02 |
| 10640133 | Connecting rod type two-level locking device, hopper car bottom door and hopper car | Chunjiang Shi, Mingdao Sun, Fengwei Liu, Baolei Wang, Wenliang Liu +4 more | 2020-05-05 |
| 9789883 | Two-level locking device, hopper car bottom door and hopper car | Chunjiang Shi, Mingdao Sun, Fengwei Liu, Baolei Wang, Wenliang Liu +4 more | 2017-10-17 |