Terence Johnston

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Aberdeen, GB

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus and method for opening and closing lateral boreholes
- Patent number 7,669,664
- Issue date Mar 2, 2010
- Smith International, Inc.
- Bruce McGarian
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Apparatus and method for opening and closing lateral boreholes
- Publication number 20050230151
- Publication date Oct 20, 2005
- Smith International, Inc.
- Bruce McGarian
- E21 - EARTH DRILLING MINING