Songfeng Yang

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Cypress, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Combination whipstock and seal bore diverter system
- Patent number 7,905,279
- Issue date Mar 15, 2011
- Baker Hughes Incorporated
- Daniel R. Hart
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
COMBINATION WHIPSTOCK AND SEAL BORE DIVERTER SYSTEM
- Publication number 20090255664
- Publication date Oct 15, 2009
- BAKER HUGHES INCORPORATED
- Daniel R. Hart
- E21 - EARTH DRILLING MINING