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发明名称
ATTACTING AND DETACHING APPARTUS FOR PLACARD CHANGE TO AUTOMATICALLY
摘要
申请公布号
KR100615403(B1)
申请公布日期
2006.08.25
申请号
KR20040036700
申请日期
2004.05.24
申请人
发明人
分类号
G09F15/00;G09F11/12
主分类号
G09F15/00
代理机构
代理人
主权项
地址
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