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发明名称
Support de traverse pour puits de mine
摘要
申请公布号
FR1037435(A)
申请公布日期
1953.09.16
申请号
FRD1037435
申请日期
1951.05.23
申请人
发明人
PEEL ALBERT
分类号
E21D7/00
主分类号
E21D7/00
代理机构
代理人
主权项
地址
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