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Braze or solder reinforced moineu stator
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Patent number 8,333,231
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Issue date Dec 18, 2012
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Schlumberger Technology Corporation
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Michael E Hooper
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Braze or solder reinforced Moineau stator
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Patent number 7,950,914
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Issue date May 31, 2011
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Smith International, Inc.
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Michael E. Hooper
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Rock bit with mechanical seal
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Patent number 5,472,058
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Issue date Dec 5, 1995
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Smith International, Inc.
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Michael E. Hooper
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E21 - EARTH DRILLING MINING
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Rock bit
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Patent number 5,353,885
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Issue date Oct 11, 1994
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Smith International, Inc.
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Michael E. Hooper
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E21 - EARTH DRILLING MINING
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