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Subsurface well apparatus
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Patent number 6,055,213
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Issue date Apr 25, 2000
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Baker Hughes Incorporated
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Richard P. Rubbo
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E21 - EARTH DRILLING MINING
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Dissolvable well plug
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Patent number 5,607,017
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Issue date Mar 4, 1997
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PES, Inc.
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Steve Owens
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E21 - EARTH DRILLING MINING
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Remote control for well tool
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Patent number 5,590,713
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Issue date Jan 7, 1997
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Baker Hughes Incorporated
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John L. Baugh
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E21 - EARTH DRILLING MINING
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