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Liner and drill pipe assembly
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Patent number 4,898,243
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Issue date Feb 6, 1990
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Lindsey Completion Systems, Inc.
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Hiram E. Lindsey
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E21 - EARTH DRILLING MINING
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Stage cementing valve
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Patent number 4,880,058
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Issue date Nov 14, 1989
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Lindsey Completion Systems, Inc.
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Hiram E. Lindsey
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E21 - EARTH DRILLING MINING
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Liner hanger assembly
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Patent number 4,498,534
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Issue date Feb 12, 1985
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MWL Tool and Supply Company
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Hiram E. Lindsey
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E21 - EARTH DRILLING MINING
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