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Debra Manther
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Royal Oak, MI, US
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Patent Grant
Switchable valve train for gas-exchange valves of internal combusti...
Patent number
7,861,681
Issue date
Jan 4, 2011
Schaeffler Technologies GmbH & Co. KG
Debra Manther
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES