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发明名称
学生尺(多用型)
摘要
省略其它视图。
申请公布号
CN3027479D
申请公布日期
1994.10.12
申请号
CN93307574.X
申请日期
1993.11.20
申请人
孙磊
发明人
孙磊
分类号
19-06
主分类号
19-06
代理机构
代理人
主权项
地址
061001河北省沧州市第一中学初一、四班
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