2014-01-01. CN103493144 (Google Patents) EP2702596A1 (Google Patents) US2014060887A1 (Google Patents) 20140053890 (Google Patents) WO2012146661 (Google Patents) CNN103493144A (Google Patents) EPP2702596A1 (Google Patents) KR20140053890 (Google Patents) USS2014060887A1 (Google Patents)