DH

David Harrington

VL Varel International Ind., L.L.C.: 1 patents #10 of 22Top 50%
📍 Dallas, TX: #212 of 660 inventorsTop 35%
🗺 Texas: #5,076 of 14,752 inventorsTop 35%
Overall (2016): #427,209 of 481,213Top 90%
1
Patents 2016

Issued Patents 2016

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
9328558 Coating of the piston for a rotating percussion system in downhole drilling Xiaobin Lu 2016-05-03