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发明名称
算术演示板
摘要
本外观设计产品为平面产品,为用于小学低年级算术教学的教学用具。
申请公布号
CN3649531D
申请公布日期
2007.05.23
申请号
CN200630025230.X
申请日期
2006.04.20
申请人
夏泽广
发明人
夏泽广
分类号
19-07
主分类号
19-07
代理机构
代理人
主权项
地址
438300湖北省麻城市第二实验小学四(1)班
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