Christopher L. Weaver

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Kuala Lumpur, MY

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Patents Grantslast 30 patents

Information Patent Grant
Model HCCV hydrostatic closed circulation valve
- Patent number 7,464,758
- Issue date Dec 16, 2008
- Baker Hughes Incorporated
- Joseph C. H. Yeo
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Model HCCV hydrostatic closed circulation valve
- Publication number 20060237191
- Publication date Oct 26, 2006
- BAKER HUGHES INCORPORATED
- Joseph C.H. Yeo
- E21 - EARTH DRILLING MINING
Information Patent Application
Model HCCV hydrostatic closed circulation valve
- Publication number 20050072575
- Publication date Apr 7, 2005
- BAKER HUGHES INCORPORATED
- Joseph C.H. Yeo
- E21 - EARTH DRILLING MINING