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发明名称
Système d'étrésillonnement (chevillage) pour le soutènement en acier des galeries de mines
摘要
申请公布号
FR1042234(A)
申请公布日期
1953.10.29
申请号
FRD1042234
申请日期
1951.09.17
申请人
HEINRICH FU:RST SOHNE
发明人
分类号
E21D11/28
主分类号
E21D11/28
代理机构
代理人
主权项
地址
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