Inventor

HIEBELER HARRY P

US2 patents

Patents

2 patents

US7243713B2Jul 17, 2007

Shear/seal ram assembly for a ram-type blowout prevention system

NAT OILWELL DHT LP50 citations88

US7464765B2Dec 16, 2008

Inner guide seal assembly and method for a ram type BOP system

NAT OILWELL DHT LP35 citations87