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Kevin L. Ingram
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Aberdeen, GB
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last 30 patents
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Patent Grant
Production tree with multiple safety barriers
Patent number
6,763,891
Issue date
Jul 20, 2004
ABB Vetco Gray Inc.
Bernard Humphrey
E21 - EARTH DRILLING MINING
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last 30 patents
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Patent Application
Production tree with multiple safety barriers
Publication number
20030019632
Publication date
Jan 30, 2003
Bernard Humphrey
E21 - EARTH DRILLING MINING