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Gerd Wöllhaf
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Weinstadt, DE
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last 30 patents
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Patent Grant
Exhaust gas muffler for internal combustion engines
Patent number
6,422,338
Issue date
Jul 23, 2002
Andreas Stihl AG & Co.
Johannes Menzel
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES