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Roger Holle
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Maulbronn, DE
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last 30 patents
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Patent Grant
Air filter for an internal combustion engine
Patent number
6,824,591
Issue date
Nov 30, 2004
Dr. Ing. h.c.F. Porsche Aktiengesellschaft
Roger Holle
G10 - MUSICAL INSTRUMENTS ACOUSTICS
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last 30 patents
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Patent Application
Air filter for an internal combustion engine
Publication number
20030172812
Publication date
Sep 18, 2003
Roger Holle
G10 - MUSICAL INSTRUMENTS ACOUSTICS