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发明名称
Procédé et appareil pour localiser des objets métalliques perdus dans un puits, tel qu'un puits de pétrole
摘要
申请公布号
FR1177320(A)
申请公布日期
1959.04.23
申请号
FRD1177320
申请日期
1957.06.18
申请人
HOUSTON OIL FIELD MATERIAL COMPANY, INC.
发明人
分类号
E21B47/09
主分类号
E21B47/09
代理机构
代理人
主权项
地址
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