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Caged slip system
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Patent number 6,119,774
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Issue date Sep 19, 2000
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Baker Hughes Incorporated
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James C. Doane
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E21 - EARTH DRILLING MINING
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Activation of downhole tools
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Patent number 5,819,854
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Issue date Oct 13, 1998
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Baker Hughes Incorporated
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James C. Doane
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E21 - EARTH DRILLING MINING
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Parallel seal assembly
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Patent number 5,472,048
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Issue date Dec 5, 1995
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Baker Hughes Incorporated
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Brian S. Kennedy
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E21 - EARTH DRILLING MINING
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Retrievable packer
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Patent number 5,273,109
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Issue date Dec 28, 1993
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Napoleon Arizmendi
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E21 - EARTH DRILLING MINING
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