Alfred Hernandez

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Pearland, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Curved flapper valve
- Patent number 6,772,842
- Issue date Aug 10, 2004
- Schlumberger Technology Corporation
- Dennis M. Read
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

Information Patent Application
Curved flapper valve
- Publication number 20040000407
- Publication date Jan 1, 2004
- Alfred Hernandez
- E21 - EARTH DRILLING MINING