Steven Johnstone

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Inverurie, GB

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Patents Grantslast 30 patents

Information Patent Grant
Annular gas lift valve
- Patent number 9,435,180
- Issue date Sep 6, 2016
- Baker Hughes Incorporated
- Dario Casciaro
- E21 - EARTH DRILLING MINING
Information Patent Grant
Alternative packer setting method
- Patent number 7,025,146
- Issue date Apr 11, 2006
- Baker Hughes Incorporated
- James G. King
- E21 - EARTH DRILLING MINING
Information Patent Grant
Pressure control system for a wet connect/disconnect hydraulic cont...
- Patent number 6,755,253
- Issue date Jun 29, 2004
- Baker Hughes Incorporated
- Robert C. Smith
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
ANNULAR GAS LIFT VALVE
- Publication number 20150114663
- Publication date Apr 30, 2015
- BAKER HUGHES INCORPORATED
- Dario Casciaro
- E21 - EARTH DRILLING MINING
Information Patent Application
Alternative packer setting method
- Publication number 20050023004
- Publication date Feb 3, 2005
- Baker Hughes Incorporated
- James G. King
- E21 - EARTH DRILLING MINING
Information Patent Application
Pressure control system for a wet connect/disconnect hydraulic cont...
- Publication number 20030173077
- Publication date Sep 18, 2003
- Robert C. Smith
- E21 - EARTH DRILLING MINING