QC

Qingyun Chang

UN Unknown: 2 patents #12,644 of 83,584Top 20%
Overall (All Time): #2,575,012 of 4,157,543Top 65%
1
Patents All Time

Issued Patents All Time

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