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发明名称
Perfectionnements aux turbines de forage applicables en particulier aux turbines carottières
摘要
申请公布号
FR1153382(A)
申请公布日期
1958.03.05
申请号
FRD1153382
申请日期
1956.05.28
申请人
ETABLISSEMENTS NEYRPIC
发明人
分类号
E21B4/02;E21B25/02
主分类号
E21B4/02
代理机构
代理人
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