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Fluid friction clutch
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Patent number 4,809,833
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Issue date Mar 7, 1989
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Fichtel & Sachs AG
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Gerd Brunken
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Fluid friction clutch
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Patent number 4,676,355
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Issue date Jun 30, 1987
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Fichtel & Sachs AG
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Gerd Brunken
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Fluid friction clutch
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Patent number 4,653,625
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Issue date Mar 31, 1987
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Fichtel & Sachs AG
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Dieter Neugebauer
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Viscous coupling for a cooling air fan
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Patent number 4,592,456
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Issue date Jun 3, 1986
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Fichtel & Sachs AG
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Dieter Neugebauer
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES