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发明名称
标识勾股定理拼板
摘要
1.省略其他视图。2.各拼板同时出售,配套使用。
申请公布号
CN3248041D
申请公布日期
2002.07.24
申请号
CN01335032.3
申请日期
2001.08.11
申请人
王正
发明人
王正
分类号
21-01-P0530
主分类号
21-01-P0530
代理机构
代理人
主权项
地址
266021山东青岛松山路1号1号楼甲603
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