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发明名称
砖用钻头
摘要
省略其它视图。
申请公布号
CN3022445D
申请公布日期
1993.12.15
申请号
CN93307084.5
申请日期
1993.04.12
申请人
王忠信
发明人
王忠信
分类号
08-01
主分类号
08-01
代理机构
威海市专利事务所
代理人
郭守江
主权项
地址
264200山东省威海市统一路39号
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