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发明名称
Retracting boring device
摘要
申请公布号
US2278845(A)
申请公布日期
1942.04.07
申请号
US19400312804
申请日期
1940.01.08
申请人
GIERN JAMES B;ANHOLTT ANDERS P
发明人
GIERN JAMES B.;ANHOLTT ANDERS P.
分类号
B23B29/034
主分类号
B23B29/034
代理机构
代理人
主权项
地址
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