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Tieback seal system and method
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Patent number 7,735,562
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Issue date Jun 15, 2010
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Baker Hughes Incorporated
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Rodney D. Bennett
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E21 - EARTH DRILLING MINING
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Liner hanger
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Patent number 7,546,872
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Issue date Jun 16, 2009
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Baker Hughes Incorporated
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Mark A. McGilvray, Jr.
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E21 - EARTH DRILLING MINING
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Expandable tieback
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Patent number 7,195,073
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Issue date Mar 27, 2007
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Baker Hughes Incorporated
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James M. Fraser, III
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E21 - EARTH DRILLING MINING