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摘要
申请公布号
CN301130268D
申请公布日期
2010.02.03
申请号
CN200930026096.9
申请日期
2009.02.20
申请人
智慧天下(北京)科技有限公司;南京智慧天下教育科技有限公司
发明人
郭 明;郑昭明;王自强
分类号
21-01
主分类号
21-01
代理机构
代理人
主权项
地址
100193北京市海淀区东北旺西路8号9号楼2区209室
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