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发明名称
Installation de forage, notamment pour faible et moyenne profondeur
摘要
申请公布号
CH499007(A)
申请公布日期
1970.11.15
申请号
CH19690008937
申请日期
1969.06.12
申请人
ALLARD,PIERRE JEAN-MARIE THEODORE
发明人
THEODORE ALLARD,PIERRE JEAN-MARIE
分类号
E21B4/20;E21B7/02;E21B10/00;(IPC1-7):E21B3/08
主分类号
E21B4/20
代理机构
代理人
主权项
地址
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