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发明名称
élément de soutènement pour exploitations minières, en particulier étançon en acier formé de deux éléments
摘要
申请公布号
FR1176274(A)
申请公布日期
1959.04.08
申请号
FRD1176274
申请日期
1957.05.28
申请人
HERMANN SCHWARZ KOMMANDITGESELLSCHAFT
发明人
分类号
E21D15/42
主分类号
E21D15/42
代理机构
代理人
主权项
地址
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