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教学卡片
摘要
省略其它视图。
申请公布号
CN3297637D
申请公布日期
2003.05.28
申请号
CN02318722.0
申请日期
2002.05.30
申请人
胡玉川
发明人
胡玉川
分类号
19-08
主分类号
19-08
代理机构
安徽省合肥新安专利代理有限责任公司
代理人
金惠贞
主权项
地址
231123安徽省合肥市长丰县陶湖小学
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