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发明名称
échafaud baladeur de soutènement pour les galeries d'extraction dans les mines de charbon et analogues
摘要
申请公布号
FR976008(A)
申请公布日期
1951.03.13
申请号
FRD976008
申请日期
1948.09.28
申请人
发明人
VANWERSCH PETER
分类号
E21D23/00
主分类号
E21D23/00
代理机构
代理人
主权项
地址
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