US Patent 7517581 Semipermeable hydrophilic membrane
Patent 7517581 was granted and assigned to PARKER-HANNIFIN CORPORATION on April, 2009 by the United States Patent and Trademark Office.
Is a
Current Assignee
Date Filed
September 23, 2004
Date of Patent
April 14, 2009
Patent Application Number
10947280
Patent Jurisdiction
Patent Number
Patent Primary Examiner
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