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发明名称
学生多用尺
摘要
用透明有机玻璃或透明塑料制造。省略其它视图。
申请公布号
CN87300164S
申请公布日期
1988.06.25
申请号
CN87300164
申请日期
1987.03.13
申请人
杨占义
发明人
杨占义
分类号
19-06
主分类号
19-06
代理机构
河北省专利事务所
代理人
付震芬
主权项
地址
河北省阜城县营盘乡杨东炮村
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