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发明名称
Dispositif pour la manoeuvre des câbles de foncage
摘要
申请公布号
FR716179(A)
申请公布日期
1931.12.16
申请号
FRD716179
申请日期
1931.04.28
申请人
RHEINISCHE DRAHT- UND KABELWERKE G.M.B.H.
发明人
分类号
E21B19/22
主分类号
E21B19/22
代理机构
代理人
主权项
地址
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