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发明名称
Dispositif pour la détermination de la position dans l'espace des trous de sondage
摘要
申请公布号
FR853116(A)
申请公布日期
1940.03.11
申请号
FRD853116
申请日期
1939.04.14
申请人
发明人
PASSLER HERMANN;BRUNNBAUER ALBERT
分类号
E21B47/022
主分类号
E21B47/022
代理机构
代理人
主权项
地址
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