US Patent 9234479 Oil scraper ring
Patent 9234479 was granted and assigned to Burckhardt Compression on January, 2016 by the United States Patent and Trademark Office.
Is a
Current Assignee
Date Filed
January 23, 2012
Date of Patent
January 12, 2016
Patent Application Number
13980743
Patent Inventor Names
Andreas Allenspach
0
Norbert Feistel
0
Patent Jurisdiction
Patent Number
Patent Primary Examiner
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