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Vane pump
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Patent number 6,481,992
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Issue date Nov 19, 2002
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Delphi Technologies, Inc.
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Albert Cheuk-Yin Wong
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Vane pump
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Patent number 6,050,796
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Issue date Apr 18, 2000
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General Motors Corporation
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Albert Cheuk-Yin Wong
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Hydraulic system for motor vehicle
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Patent number 5,802,848
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Issue date Sep 8, 1998
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General Motors Corporation
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Kevin Mark McClendon
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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Cap and valve assembly
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Patent number 4,392,583
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Issue date Jul 12, 1983
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General Motors Corporation
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Tom C. Wong
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B60 - VEHICLES IN GENERAL