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经营范围
发明名称
Jonction d'éléments de tubes de sondage
摘要
申请公布号
FR1197304(A)
申请公布日期
1959.11.30
申请号
FRD1197304
申请日期
1958.06.18
申请人
BADE & CO G. M. B. H.
发明人
分类号
E21B17/046
主分类号
E21B17/046
代理机构
代理人
主权项
地址
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