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Valve assembly
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Patent number 10,161,530
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Issue date Dec 25, 2018
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Extreme Technologies, LLC
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James D. Isenhour
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E21 - EARTH DRILLING MINING
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Fluid pulse valve
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Patent number 9,915,117
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Issue date Mar 13, 2018
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Extreme Technologies, LLC
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Gilbert Troy Meier
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E21 - EARTH DRILLING MINING
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Fluid pulse valve
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Patent number 9,605,511
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Issue date Mar 28, 2017
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Extreme Technologies, LLC
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Gilbert Troy Meier
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E21 - EARTH DRILLING MINING
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Valve assembly
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Patent number 9,410,637
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Issue date Aug 9, 2016
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Extreme Technologies, LLC
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James D. Isenhour
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F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
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Wellbore conditioning system
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Patent number 9,163,460
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Issue date Oct 20, 2015
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Extreme Technologies, LLC
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James D. Isenhour
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E21 - EARTH DRILLING MINING
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Valve assembly
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Patent number 9,010,370
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Issue date Apr 21, 2015
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Extreme Technologies, LLC
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James D. Isenhour
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...