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发明名称
学生多用R规
摘要
右视图和左视图相同,省略右视图。仰视图和俯视图省略。
申请公布号
CN85300516S
申请公布日期
1987.10.10
申请号
CN85300516
申请日期
1985.11.03
申请人
蔡高新
发明人
蔡高新
分类号
19-06
主分类号
19-06
代理机构
代理人
主权项
地址
河南省陕县教育局教研室
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