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发明名称
Dispositif à refouler par une pompe dans un tuyau
摘要
申请公布号
FR1315588(A)
申请公布日期
1963.01.18
申请号
FR19620888737
申请日期
1962.02.21
申请人
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N. V.
发明人
分类号
E21B23/10
主分类号
E21B23/10
代理机构
代理人
主权项
地址
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