YC

Yufeng Cao

CC Crrc Qiqihar Rolling Stock Co.: 1 patents #3 of 12Top 25%
📍 Qiqihar, CN: #3 of 10 inventorsTop 30%
Overall (2018): #179,877 of 503,207Top 40%
1
Patents 2018

Issued Patents 2018

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
10086851 Bogie and axle box suspension positioning device thereof Shifeng Xu, Derong Zhang, Yanchen Zhang, Haibin Hu, Wendong Shao +3 more 2018-10-02