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发明名称
Appareil de soutènement pour mines
摘要
申请公布号
FR1043173(A)
申请公布日期
1953.11.06
申请号
FRD1043173
申请日期
1951.08.22
申请人
发明人
PERRIN JACQUES
分类号
E21D23/00;E21D23/06
主分类号
E21D23/00
代理机构
代理人
主权项
地址
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