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发明名称
双面型砂盘
摘要
省略其它视图。
申请公布号
CN3011685S
申请公布日期
1991.12.11
申请号
CN91303575.0
申请日期
1991.06.22
申请人
上海海通工具厂
发明人
周文浩
分类号
08-01-M0165
主分类号
08-01-M0165
代理机构
代理人
主权项
地址
200072上海市闸北区汶水路301号
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