William Rusty Stephenson

Follow

Person

Houston, TX, US

People

Patents Grantslast 30 patents

Information Patent Grant
Liner hanger with sliding sleeve valve
- Patent number 7,172,021
- Issue date Feb 6, 2007
- Shell Oil Company
- David Paul Brisco
- E21 - EARTH DRILLING MINING
Information Patent Grant
Liner hanger with sliding sleeve valve
- Patent number 6,976,541
- Issue date Dec 20, 2005
- Shell Oil Company
- David Paul Brisco
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Liner hanger with sliding sleeve valve
- Publication number 20050087337
- Publication date Apr 28, 2005
- Shell Oil Company
- David Paul Brisco
- E21 - EARTH DRILLING MINING
Information Patent Application
Liner hanger with sliding sleeve valve
- Publication number 20040045718
- Publication date Mar 11, 2004
- David Paul Brisco
- E21 - EARTH DRILLING MINING