Combined Oil Ring

Patent No. EP2703695 (titled "Combined Oil Ring") was filed by Nippon Piston Ring on Aug 22, 2013. The application was issued on Sep 16, 2015.

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EP2703695

NIPPON PISTON RING
Application Number
EP13181284A
Filing Date
Aug 22, 2013
Status
Revoked
Aug 10, 2018
Publication Date
Sep 16, 2015