John E. Gunnells

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Broken Arrow, OK, US

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Patents Grantslast 30 patents

Information Patent Grant
Switching apparatus between independent control systems for a subsu...
- Patent number 7,762,335
- Issue date Jul 27, 2010
- Baker Hughes Incorporated
- David Z. Anderson
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
UNDULATING SEALING SURFACE WITH RAISED RIDGE
- Publication number 20120291888
- Publication date Nov 22, 2012
- BAKER HUGHES INCORPORATED
- Daren Bane
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
Unitary Flapper Base Method of Manufacture
- Publication number 20120186084
- Publication date Jul 26, 2012
- BAKER HUGHES INCORPORATED
- Tyler C. Roberts
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
Unitary Flapper Base and Method of Manufacture
- Publication number 20100314571
- Publication date Dec 16, 2010
- BAKER HUGHES INCORPORATED
- Tyler C. Roberts
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
Switching Apparatus Between Independent Control Systems for a Subsu...
- Publication number 20090050327
- Publication date Feb 26, 2009
- David Z. Anderson
- E21 - EARTH DRILLING MINING