AK

Alexander Kowalchuk

📍 Estevan, CA: #2 of 10 inventorsTop 20%
Overall (All Time): #1,946,711 of 4,157,543Top 50%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
9890780 Hydraulically powered ball valve lift apparatus and method for downhole pump travelling valves — 2018-02-13
9033688 Hydraulically powered ball valve lift apparatus and method for downhole pump travelling valves — 2015-05-19