Mark Schiel

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Magnolia, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Flapper valve
- Patent number 8,607,876
- Issue date Dec 17, 2013
- ThruBit, B.V.
- Jonathan Macrae
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

Information Patent Application
Flapper Valve
- Publication number 20120205116
- Publication date Aug 16, 2012
- THRUBIT B.V.
- Jonathan Macrae
- E21 - EARTH DRILLING MINING