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公开(公告)号:KR102160605B1
公开(公告)日:2020-09-28
申请号:KR1020200015012
申请日:2020-02-07
Applicant: 김도형
Inventor: 김도형 , 이서연
IPC: G06Q50/10 , H04N5/225 , G06K9/20 , G06Q30/08 , G06Q30/06 , A47B61/00