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发明名称
麻花钻头
摘要
省略其它视图。
申请公布号
CN3018821D
申请公布日期
1993.05.26
申请号
CN92302052.7
申请日期
1992.05.19
申请人
周宏韬
发明人
周宏韬
分类号
08-01
主分类号
08-01
代理机构
长春市专利事务所
代理人
赵建惠
主权项
地址
130032吉林省长春市南关区东安屯永安路北38委14组1胡同2号
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