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Herbert Schumacher
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Lichtenwald, DE
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Patents Grants
last 30 patents
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Patent Grant
Automotive exhaust silencer system with variable damping characteri...
Patent number
7,040,451
Issue date
May 9, 2006
J. Eberspacher GmbH & Co.
Herbert Schumacher
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information
Patent Grant
Multiple-chambered exhaust muffler
Patent number
7,004,283
Issue date
Feb 28, 2006
J. Eberspächer GmbH & Co. KG
Siegfried Wörner
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Patents Applications
last 30 patents
Information
Patent Application
Multiple-chambered exhaust muffler
Publication number
20040003963
Publication date
Jan 8, 2004
Siegfried Worner
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information
Patent Application
Automotive exhaust silencer system with variable damping characteri...
Publication number
20020175022
Publication date
Nov 28, 2002
Herbert Schumacher
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information
Patent Application
Valve in an exhaust gas muffler device of a motor vehicle
Publication number
20020005318
Publication date
Jan 17, 2002
Herbert Schumacher
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES