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公开(公告)号:KR102106549B1
公开(公告)日:2020-05-04
申请号:KR1020190098204
申请日:2019-08-12
Applicant: (주)에스코알티에스
Inventor: 김영권 , 홍시완 , 고용복
IPC: E01F15/00 , E01F9/646 , E01F9/608