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发明名称
Multiple cutter boring device
摘要
申请公布号
US2630725(A)
申请公布日期
1953.03.10
申请号
US19510231727
申请日期
1951.06.15
申请人
UNITED STATES STEEL CORPORATION
发明人
BLACK EDWARD T.
分类号
B23B29/03
主分类号
B23B29/03
代理机构
代理人
主权项
地址
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