DG

David GRONNING

📍 Edmonton, CA: #922 of 2,912 inventorsTop 35%
Overall (All Time): #1,946,722 of 4,157,543Top 50%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
9890841 Rod rotator — 2018-02-13
9518457 Downhole tool for opening a travelling valve assembly of a reciprocating downhole pump — 2016-12-13