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Variable displacement pump-motor
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Patent number 10,738,757
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Issue date Aug 11, 2020
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Regetns of the University of Minnesota
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Michael Rannow
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F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
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Hydraulic pump-motor
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Patent number 10,598,146
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Issue date Mar 24, 2020
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Komatsu Ltd.
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Takeo Iida
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F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
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Axial piston machines
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Patent number 9,103,333
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Issue date Aug 11, 2015
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Duke Engines Limited
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Noel Stephen Duke
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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3823649
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Patent number 3,823,649
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Issue date Jul 16, 1974
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F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
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3675539
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Patent number 3,675,539
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Issue date Jul 11, 1972
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F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
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3071014
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Patent number 3,071,014
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Issue date Jan 1, 1963
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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2785639
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Patent number 2,785,639
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Issue date Mar 19, 1957
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F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
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2614540
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Patent number 2,614,540
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Issue date Oct 21, 1952
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F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...