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Tubing connection arrangement
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Patent number 7,559,582
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Issue date Jul 14, 2009
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Weatherford/Lamb, Inc.
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Jason David Evans
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Tubing connection arrangement
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Patent number 7,240,928
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Issue date Jul 10, 2007
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Weatherford/Lamb, Inc.
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Jason David Evans
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Downhole apparatus
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Patent number 6,725,937
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Issue date Apr 27, 2004
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Weatherford/Lamb, Inc.
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Colin McHardy
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E21 - EARTH DRILLING MINING
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Upstroke jar
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Patent number 5,267,613
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Issue date Dec 7, 1993
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Petroline Wireline Services Limited
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Klaas J. Zwart
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E21 - EARTH DRILLING MINING
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