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发明名称
SCHLAGBOHRWERKZEUG
摘要
申请公布号
DE2834388(A1)
申请公布日期
1979.02.15
申请号
DE19782834388
申请日期
1978.08.05
申请人
COMPAGNIE FRANCAISE DES PETROLES,S.A.
发明人
CARBONARO,MARIO
分类号
E21B1/26;E21B4/14;E21B6/00;E21B7/24;E21B10/00;(IPC1-7):E21C3/20;E21B5/00
主分类号
E21B1/26
代理机构
代理人
主权项
地址
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