Issued Patents All Time
Showing 26–26 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6182575 | Adjustable stop-wagon retarders with locking function for wagons at high speed and disposal methods thereof | Yongting Liu, Qian Wang, Lining Wang, Mingzhu Wang, Hongbo Yu +1 more | 2001-02-06 |