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发明名称
Trepanned core cutoff tool
摘要
申请公布号
US2870836(A)
申请公布日期
1959.01.27
申请号
US19550509702
申请日期
1955.05.19
申请人
ROSATO NICOLA P;SIEMEN SVEN E
发明人
ROSATO NICOLA P.;SIEMEN SVEN E.
分类号
B23B51/04
主分类号
B23B51/04
代理机构
代理人
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