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发明名称
初中数学万用尺
摘要
省略其他视图。
申请公布号
CN3018527D
申请公布日期
1993.05.12
申请号
CN92307765.0
申请日期
1992.11.14
申请人
戴汝潜
发明人
戴汝潜
分类号
19-06
主分类号
19-06
代理机构
农业部专利事务所
代理人
董金和
主权项
地址
100044北京市海淀区西外净土寺卫生部小区七楼101号
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