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Dual flapper safety valve
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Patent number 8,047,294
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Issue date Nov 1, 2011
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Halliburton Energy Services, Inc.
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James D. Vick, Jr.
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E21 - EARTH DRILLING MINING
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Dual flapper safety valve
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Patent number 7,798,229
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Issue date Sep 21, 2010
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Halliburton Energy Services, Inc.
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James D. Vick, Jr.
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E21 - EARTH DRILLING MINING
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Electrically operated well tools
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Patent number 7,640,989
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Issue date Jan 5, 2010
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Halliburton Energy Services, Inc.
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Jimmie R. Williamson, Jr.
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E21 - EARTH DRILLING MINING
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Deep set safety valve
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Patent number 7,624,807
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Issue date Dec 1, 2009
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Halliburton Energy Services, Inc.
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James D. Vick, Jr.
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E21 - EARTH DRILLING MINING
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Safety valve with extension springs
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Patent number 7,597,149
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Issue date Oct 6, 2009
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Halliburton Energy Services, Inc.
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Jimmie R. Williamson, Jr.
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Deep set safety valve
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Patent number 7,434,626
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Issue date Oct 14, 2008
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Halliburton Energy Services, Inc.
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James D. Vick, Jr.
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E21 - EARTH DRILLING MINING
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Deep set safety valve
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Patent number 7,213,653
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Issue date May 8, 2007
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Halliburton Energy Services, Inc.
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James D. Vick, Jr.
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E21 - EARTH DRILLING MINING
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Deep set safety valve
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Patent number 6,988,556
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Issue date Jan 24, 2006
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Halliburton Energy Services, Inc.
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James D. Vick, Jr.
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E21 - EARTH DRILLING MINING