QC

Qingyun Chang

UN Unknown: 2 patents #12,644 of 83,584Top 20%
📍 Bengbu, CN: #10 of 26 inventorsTop 40%
Overall (All Time): #2,575,012 of 4,157,543Top 65%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
11613328 Hull auxiliary mechanism for reducing the draft of a hull Xuming Tang, Anding LIU, Xiucai He 2023-03-28