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经营范围
发明名称
Vorrichtung zum Bohren eines Grubenschachtes
摘要
申请公布号
DE1157179(B)
申请公布日期
1963.11.14
申请号
DE1958ST13603
申请日期
1958.03.31
申请人
STAMICARBON N.V.
发明人
SLOTBOOM JOHAN GERRIT
分类号
E21B21/00
主分类号
E21B21/00
代理机构
代理人
主权项
地址
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