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公开(公告)号:KR101990548B1
公开(公告)日:2019-06-18
申请号:KR1020180134332
申请日:2018-11-05
Applicant: 강릉원주대학교산학협력단
Inventor: 신승숙 , 박상덕 , 황윤희
IPC: E04H9/14 , E04G23/02 , A01G9/02