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发明名称
INRICHTING VOOR HET BUITENGAATS GERICHT BOREN VAN PUTTEN.
摘要
申请公布号
NL172476(B)
申请公布日期
1983.04.05
申请号
NL19760001543
申请日期
1976.02.16
申请人
GURTLER HEBERT & CO INC
发明人
分类号
E21B7/04;E21B7/136;E21B15/04;(IPC1-7):E21B7/04
主分类号
E21B7/04
代理机构
代理人
主权项
地址
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