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经营范围
发明名称
KOBLINGSENHET.
摘要
申请公布号
NO161707(B)
申请公布日期
1989.06.05
申请号
NO19830002619
申请日期
1983.07.19
申请人
INSTITUT FRANCAIS DU PETROLE
发明人
CHEVALIER, ANDRE
分类号
E21B17/18;E21B17/02;E21B17/042;H01R13/523;(IPC1-7):H01R13/523;E21B47/12
主分类号
E21B17/18
代理机构
代理人
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地址
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