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发明名称
Dispositif de serrage pour étançon destiné au soutènement dans les mines
摘要
申请公布号
FR973824(A)
申请公布日期
1951.02.15
申请号
FRD973824
申请日期
1948.10.19
申请人
发明人
PAGELS AUGUST HEINRICH
分类号
E21D15/38
主分类号
E21D15/38
代理机构
代理人
主权项
地址
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