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Hongxin Yan

XC Xuzhou Coal Mine Safety Equipment Manufacture Co.: 1 patents #10 of 21Top 50%
Overall (2021): #430,062 of 548,734Top 80%
1
Patents 2021

Issued Patents 2021

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
11199091 Cageway connecting device and connecting method thereof Qiang Qin, Changhua Hu, Qingyong Du, Jianguo Ding 2021-12-14