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公开(公告)号:KR101994040B1
公开(公告)日:2019-06-27
申请号:KR1020180034922
申请日:2018-03-27
Applicant: 군산대학교산학협력단
Inventor: 공시현 , 장민석
IPC: A47L7/02 , A47L7/00 , A47L9/02 , A47L9/32