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发明名称
BOREHOLE CONTACTING APPARATUS FOR BOTTOM HOLE ASSEMBLY
摘要
申请公布号
GB2011976(B)
申请公布日期
1982.02.10
申请号
GB19780039679
申请日期
1978.10.06
申请人
TECHNICAL DRILLING TOOLS INC
发明人
分类号
E21B17/10;(IPC1-7):E21B17/10
主分类号
E21B17/10
代理机构
代理人
主权项
地址
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