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发明名称
DRILL GUIDE
摘要
申请公布号
GB8320662(D0)
申请公布日期
1983.09.01
申请号
GB19830020662
申请日期
1983.08.01
申请人
TAMPELLA AB OY
发明人
分类号
E21B19/24;(IPC1-7):E21C9/00
主分类号
E21B19/24
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