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经营范围
发明名称
High speed drilling attachment
摘要
申请公布号
US2826095(A)
申请公布日期
1958.03.11
申请号
US19540472365
申请日期
1954.12.01
申请人
DIRZIUS
发明人
DIRZIUS BENNIE F.;MAYFIELD ROBERT H.
分类号
B23Q5/04
主分类号
B23Q5/04
代理机构
代理人
主权项
地址
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