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发明名称
CORE-DRILLING TOOL
摘要
申请公布号
GB2187774(B)
申请公布日期
1989.11.15
申请号
GB19870005653
申请日期
1987.03.10
申请人
* SOLETANCHE S A
发明人
PHILIPPE * GUEROULT;FRANCK * WEYLAND
分类号
E21B10/02;E21B10/42;E21B10/60
主分类号
E21B10/02
代理机构
代理人
主权项
地址
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