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发明名称
Apparatus for advertising a study book
摘要
申请公布号
KR100737338(B1)
申请公布日期
2007.07.09
申请号
KR20050118732
申请日期
2005.12.07
申请人
发明人
分类号
G06Q50/20;G06Q30/02;G09B5/00
主分类号
G06Q50/20
代理机构
代理人
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地址
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