Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8561546 | Bogie | Zhenming Liu, Shihui Duan, Pingwei Yin, Hai Yao | 2013-10-22 |
| 8448580 | Freight car bogie and freight car | Zhenming Liu, Haibin Hu, Shuming Xing, Pingwei Yin, Hai Yao | 2013-05-28 |