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公开(公告)号:KR102062306B1
公开(公告)日:2020-01-03
申请号:KR1020180067031
申请日:2018-06-11
Applicant: 국민대학교산학협력단
Inventor: 정재일 , 임홍재 , 이준영
IPC: B28D7/00 , B28D5/04 , B65H75/10