Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Dave Petersen0
Wayne Ernest Conrad0
Date of Patent
July 16, 2013
0Patent Application Number
127210040
Date Filed
March 10, 2010
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A filter apparatus comprises first and second filters, each having an upstream surface and a downstream surface. At least one bypass channel extends from a position upstream of the upstream surface of the first filter to a position upstream of the upstream surface of the second filter.
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