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公开(公告)号:KR102070739B1
公开(公告)日:2020-01-29
申请号:KR1020187024432
申请日:2017-02-22
Applicant: 히다찌긴조꾸가부시끼가이사
Inventor: 수가하라카츠오
IPC: C22C19/05 , F22B37/04