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Merlin drilling riser assembly
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Patent number 9,657,531
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Issue date May 23, 2017
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OIL STATES INDUSTRIES (UK) LTD.
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John Gallagher
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E21 - EARTH DRILLING MINING
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Merlin drilling riser assembly
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Patent number 9,121,229
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Issue date Sep 1, 2015
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Oil States Industries (UK) Ltd.
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John Gallagher
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E21 - EARTH DRILLING MINING
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Pipe connector device
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Patent number 8,056,940
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Issue date Nov 15, 2011
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Oil States Industries (UK) Ltd.
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David James Edward Morgan
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E21 - EARTH DRILLING MINING
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Pipe connectors
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Patent number 5,954,374
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Issue date Sep 21, 1999
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Oil States Industries (UK) Ltd.
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John Gallagher
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E21 - EARTH DRILLING MINING