Issued Patents 2017
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9789883 | Two-level locking device, hopper car bottom door and hopper car | Chunjiang Shi, Mingdao Sun, Qiangjun Jiang, Fengwei Liu, Baolei Wang +4 more | 2017-10-17 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9789883 | Two-level locking device, hopper car bottom door and hopper car | Chunjiang Shi, Mingdao Sun, Qiangjun Jiang, Fengwei Liu, Baolei Wang +4 more | 2017-10-17 |