Men Fung Chin

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Edmonton, CA

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Patents Grantslast 30 patents

Information Patent Grant
Tubing hanger with ball valve in production string
- Patent number 7,275,591
- Issue date Oct 2, 2007
- ERC Industries
- Gregory Wayne Allen
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

Information Patent Application
Tubing hanger with ball valve in production string
- Publication number 20060060348
- Publication date Mar 23, 2006
- Gregory Wayne Allen
- E21 - EARTH DRILLING MINING