QC

Qingyun Chang

UN Unknown: 1 patents #342 of 3,065Top 15%
📍 Bengbu, CN: #3 of 9 inventorsTop 35%
Overall (2023): #291,636 of 537,848Top 55%
1
Patents 2023

Issued Patents 2023

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