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David Duch
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Sussex, WI, US
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last 30 patents
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Patent Grant
Catalytic muffler having crossover passageway for secondary air
Patent number
8,136,350
Issue date
Mar 20, 2012
Briggs & Stratton Corporation
David Duch
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Patents Applications
last 30 patents
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Patent Application
VAPOR RELIEF SYSTEM FOR FUEL INJECTOR
Publication number
20130104849
Publication date
May 2, 2013
BRIGGS & STRATTON CORPORATION
Patrick J. Bruener
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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Patent Application
CATALYTIC MUFFLER HAVING CROSSOVER PASSAGEWAY FOR SECONDARY AIR
Publication number
20090293462
Publication date
Dec 3, 2009
David Duch
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES