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发明名称
DRILL AND METHOD OF MAKING SAME
摘要
申请公布号
PL317598(A1)
申请公布日期
1997.06.23
申请号
PL19960317598
申请日期
1996.12.19
申请人
AMIC INDUSTRIES LTD
发明人
BAWDEN RONALD
分类号
E21B10/54;E21B10/56;E21B10/567;(IPC1-7):B23B51/00;B23P15/32
主分类号
E21B10/54
代理机构
代理人
主权项
地址
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