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公开(公告)号:KR2019920013436U
公开(公告)日:1992-07-27
申请号:KR2019900019771
申请日:1990-12-14
Applicant: 박현미
Inventor: 박사선
IPC: G11B23/04
公开(公告)号:KR2019920010202U
公开(公告)日:1992-06-17
申请号:KR2019900017936
申请日:1990-11-21