YC

Yufeng Chang

Overall (All Time): #2,749,223 of 4,157,543Top 70%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
11118586 Bailer-type long-shaft pump and application thereof Ye Grace Chen, Xiaofeng Gu, Hao Chen, Jianzhong Yu, Yibing Guan +4 more 2021-09-14