Bernard Humphrey

Follow

Person

Potterton, GB

People

Patents Grantslast 30 patents

Information Patent Grant
Production tree with multiple safety barriers
- Patent number 6,763,891
- Issue date Jul 20, 2004
- ABB Vetco Gray Inc.
- Bernard Humphrey
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Production tree with multiple safety barriers
- Publication number 20030019632
- Publication date Jan 30, 2003
- Bernard Humphrey
- E21 - EARTH DRILLING MINING