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发明名称
étançon de mine
摘要
申请公布号
FR1120297(A)
申请公布日期
1956.07.03
申请号
FRD1120297
申请日期
1955.03.04
申请人
LE PROGRES CHARBONNIER
发明人
分类号
E21D15/38;E21D15/54
主分类号
E21D15/38
代理机构
代理人
主权项
地址
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