DL

Dong Liu

📍 Shandong, CN: #31 of 114 inventorsTop 30%
Overall (2016): #414,922 of 481,213Top 90%
1
Patents 2016

Issued Patents 2016

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
9493997 Floating clamping device for injection head of continuous oil pipe Qingfeng Yu, Jilei Fang 2016-11-15