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Pressure driven pumping system
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Patent number 8,323,003
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Issue date Dec 4, 2012
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Hydril USA Manufacturing LLC
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Robert Arnold Judge
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Free piston pump
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Patent number 4,410,304
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Issue date Oct 18, 1983
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HR Textron Inc.
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Raymond A. Bergloff
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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3649135
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Patent number 3,649,135
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Issue date Mar 14, 1972
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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3230888
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Patent number 3,230,888
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Issue date Jan 25, 1966
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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3085512
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Patent number 3,085,512
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Issue date Apr 16, 1963
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES