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发明名称
Drilling apparatus
摘要
申请公布号
GB2196885(A)
申请公布日期
1988.05.11
申请号
GB19870025524
申请日期
1987.10.30
申请人
* ALH SYSTEMS LIMITED
发明人
ALEC REGINALD * CARRUTHERS
分类号
B23B51/04;(IPC1-7):B23B51/04
主分类号
B23B51/04
代理机构
代理人
主权项
地址
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