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经营范围
发明名称
Dispositif d'ancrage perfectionné pour mines de charbon, etc.
摘要
申请公布号
FR972566(A)
申请公布日期
1951.01.31
申请号
FRD972566
申请日期
1948.09.29
申请人
MAVOR & COULSON LIMITED
发明人
分类号
E21C29/02;E21C29/08
主分类号
E21C29/02
代理机构
代理人
主权项
地址
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