Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
March 17, 2015
Patent Application Number
12228093
Date Filed
February 26, 2009
Patent Citations Received
Patent Primary Examiner
Patent abstract
Filter element or air filter in the configuration of a multiple bellows filter with an increased efficiency for use in internal combustion engines, wherein a folded filter bellows is arranged radially inwardly of another folded filter bellows and the inner folded filter bellows has a greater or deeper fold depth than the outer folded filter bellows.
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