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公开(公告)号:KR102066550B1
公开(公告)日:2020-01-15
申请号:KR1020180021654
申请日:2018-02-23
Applicant: 가톨릭관동대학교산학협력단
Inventor: 이웅균 , 조현지 , 김예찬 , 이영훈
IPC: E04G17/16 , E04G13/04