Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
January 11, 2011
Patent Application Number
12014526
Date Filed
January 15, 2008
Patent Primary Examiner
Patent abstract
An object of the present invention is to provide a butterfly valve device made of resin, the butterfly valve device being little susceptible the secular change in gas flow (in particular, the minimum flow) or random changes.
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