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Flow regulator valve
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Patent number 5,431,183
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Issue date Jul 11, 1995
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ZF Friedrichshafen, AG
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Gunther Seidl
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Flow regulating rotary vane pump
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Patent number 4,715,793
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Issue date Dec 29, 1987
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Zahnradfabrik Friedrichshafen, AG
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Merz Johann
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Regulation of vane pumps
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Patent number 4,701,111
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Issue date Oct 20, 1987
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Zahnradfabrik Friedrichshafen, AG
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Gunther Seidl
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Regulatable vane pump
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Patent number 4,536,133
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Issue date Aug 20, 1985
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Zahnradfabrik Friedrichshafen, AG.
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Gunther Seidl
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...