Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11932288 | Double-deck rail vehicle and vehicle body thereof | Zhishen Li, Jijun Ma, Chao Luo, Likui Guo, Zhe Qu +2 more | 2024-03-19 |
| 9409580 | Obstacle removing and energy absorbing device and leading car of motor train unit | Guoping Zhang, Jiangong WANG, Jijun Ma, Quanmei Guan, Qinggang Zhang +1 more | 2016-08-09 |