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发明名称
DISPOSITIF DE RACCORDEMENT A UNE TETE DE PUITS SOUS-MARINE
摘要
申请公布号
FR2493395(B1)
申请公布日期
1985.11.22
申请号
FR19810020535
申请日期
1981.11.02
申请人
NL INDUSTRIES INC
发明人
分类号
E21B33/035;E21B33/038;E21B43/01;E21B43/013;(IPC1-7):E21B33/038
主分类号
E21B33/035
代理机构
代理人
主权项
地址
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