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Powershift gearbox/transmission
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Patent number 4,685,343
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Issue date Aug 11, 1987
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Zahnradfabrik Friedrichshafen AG
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Friedrich J. Ehrlinger
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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All-wheel drive for a vehicle
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Patent number 4,671,377
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Issue date Jun 9, 1987
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Zahnradfabrik Friedrichshafen AG
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Friedrich Ehrlinger
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B60 - VEHICLES IN GENERAL
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Forced-cooling friction brake or clutch
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Patent number 4,667,798
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Issue date May 26, 1987
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Zahnfabrik Friedrichshafen AG
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Hubert Sailer
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Friction device
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Patent number 4,624,353
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Issue date Nov 25, 1986
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Zahnradfabrik Friedrichshafen AG
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Hubert Sailer
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...