XL

Xilin Liu

NV National Oilwell Varco: 1 patents #28 of 93Top 35%
📍 Baofeng County, CA: #2 of 4 inventorsTop 50%
Overall (2016): #182,125 of 481,213Top 40%
1
Patents 2016

Issued Patents 2016

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
9488013 Bi-directionally raisable drilling rig mast Robert Benjamin Donnally, Chunqiao Ren 2016-11-08