Inventor

FRANCHEK MATTHEW ALBERT

US2 patents

Patents

2 patents

US11555371B2Jan 17, 2023

Valve having protected, moveable seal and seal assembly therefor

NAT OILWELL VARCO LP0 citations43

US10132133B2Nov 20, 2018

Method of closing a blowout preventer seal based on seal erosion

NAT OILWELL VARCO LP0 citations29