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经营范围
发明名称
BOORINRICHTING
摘要
申请公布号
BE863426(A1)
申请公布日期
1978.05.16
申请号
BE19780184720
申请日期
1978.01.27
申请人
CONRAD-STORK B.V.
发明人
分类号
E21B19/084;(IPC1-7):E21B/
主分类号
E21B19/084
代理机构
代理人
主权项
地址
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