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Fluid friction coupling
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Patent number 5,259,488
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Issue date Nov 9, 1993
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Viscodrive GmbH
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Franz-Josef Oberdorster
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Viscous coupling for a drive assembly
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Patent number 5,101,948
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Issue date Apr 7, 1992
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Viscodrive GmbH
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Helmut Wiese
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Clutch
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Patent number 4,966,265
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Issue date Oct 30, 1990
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Viscodrive GmbH
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Helmut Wiese
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B60 - VEHICLES IN GENERAL
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Viscous shear coupling
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Patent number 4,889,206
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Issue date Dec 26, 1989
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Viscodrive GmbH
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Helmut Wiese
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B60 - VEHICLES IN GENERAL
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