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David Mason
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Katy, TX, US
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Patents Grants
last 30 patents
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Patent Grant
Method and apparatus for drilling and completing a well with an exp...
Patent number
6,799,645
Issue date
Oct 5, 2004
Shell Oil Company
David Mason
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
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Patent Application
Wellbore device for selective transfer of fluid
Publication number
20050252651
Publication date
Nov 17, 2005
Shell Oil Company
Martin Gerard Rene Bosma
E21 - EARTH DRILLING MINING
Information
Patent Application
Method and apparatus for drilling and completing a well with an exp...
Publication number
20040108140
Publication date
Jun 10, 2004
David Mason
E21 - EARTH DRILLING MINING