US Patent 7231894 Rotary positive displacement machine
Patent 7231894 was granted and assigned to E.A. Technical Services Limited on June, 2007 by the United States Patent and Trademark Office.
Is a
Current Assignee
Date Filed
January 17, 2003
Date of Patent
June 19, 2007
Patent Application Number
10501148
Patent Jurisdiction
Patent Number
Patent Primary Examiner
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