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Insulated bearings for downhole motors
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Patent number 7,950,906
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Issue date May 31, 2011
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Baker Hughes Incorporated
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Clarence F. Hall, Jr.
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Motor bearing for submersible motors
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Patent number 6,956,310
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Issue date Oct 18, 2005
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Baker Hughes Incorporated
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Dick Lee Knox
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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Vibration damping system for ESP motor
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Patent number 6,566,774
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Issue date May 20, 2003
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Baker Hughes Incorporated
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Larry James Parmeter
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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Abrasion resistant centrifugal pump
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Patent number 5,722,812
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Issue date Mar 3, 1998
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Baker Hughes Incorporated
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Dick L. Knox
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Motor variable frequency drive
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Patent number 4,491,778
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Issue date Jan 1, 1985
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Hughes Tool Company
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Dick L. Knox
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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