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经营范围
发明名称
铝质螺旋管
摘要
省略其它视图。
申请公布号
CN3007891S
申请公布日期
1991.01.30
申请号
CN90301083.6
申请日期
1990.05.10
申请人
包德才
发明人
包德才
分类号
15-99
主分类号
15-99
代理机构
上海冶金专利事务所
代理人
周利民
主权项
地址
200063上海市曹阳一村52号605室
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