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摘要
申请公布号
FR2089638(A5)
申请公布日期
1972.01.07
申请号
FR19710013133
申请日期
1971.04.14
申请人
USS ENGINEERS CONSULTANT
发明人
ASHWORTH R H
分类号
B23H9/00;B23H9/06;(IPC1-7):B23P1/00
主分类号
B23H9/00
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