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Downhole disconnect mechanism
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Patent number 7,992,638
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Issue date Aug 9, 2011
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Schlumberger Technology Corporation
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Jim B. Benton
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E21 - EARTH DRILLING MINING
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Packer
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Patent number 6,564,876
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Issue date May 20, 2003
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Schlumberger Technology Corporation
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Vladimir Vaynshteyn
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E21 - EARTH DRILLING MINING
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Packer
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Patent number 6,315,050
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Issue date Nov 13, 2001
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Schlumberger Technology Corp.
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Vladimir Vaynshteyn
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E21 - EARTH DRILLING MINING
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Packer
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Patent number 6,186,227
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Issue date Feb 13, 2001
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Schlumberger Technology Corporation
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Vladimir Vaynshteyn
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E21 - EARTH DRILLING MINING