DL

Dong Liu

📍 Shandong, CN: #38 of 173 inventorsTop 25%
Overall (2017): #437,038 of 506,227Top 90%
1
Patents 2017

Issued Patents 2017

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
9617808 Continuous oil pipe clamp mechanism Qingfeng Yu, Jilei Fang 2017-04-11