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经营范围
发明名称
Tête de puits de pétrole installée sous l'eau
摘要
申请公布号
FR1263156(A)
申请公布日期
1961.06.05
申请号
FR19600834284
申请日期
1960.07.28
申请人
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N. V.
发明人
分类号
E21B33/035;E21B33/037
主分类号
E21B33/035
代理机构
代理人
主权项
地址
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