WR

Weichun Ren

QC Qiqihar Railway Rolling Stock Co.: 1 patents #26 of 48Top 55%
Overall (All Time): #3,180,380 of 4,157,543Top 80%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
8561548 Journal box rubber pad and bogie Zhenming Liu, Lidong Li, Shuming Xing, Haibin Hu, Chaoyu Li +1 more 2013-10-22