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经营范围
发明名称
Dispositif d'ancrage pour colonnes de tubes, utilisable notamment lors du forage de puits
摘要
申请公布号
FR1305536(A)
申请公布日期
1962.10.05
申请号
FR19610871257
申请日期
1961.08.21
申请人
BAKER OIL TOOLS, INC.
发明人
分类号
E21B23/01;E21B23/04
主分类号
E21B23/01
代理机构
代理人
主权项
地址
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