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发明名称
étai de mine
摘要
申请公布号
FR1009056(A)
申请公布日期
1952.05.26
申请号
FRD1009056
申请日期
1950.01.24
申请人
MANNESMANNROHREN-WERKE
发明人
分类号
E21D15/38
主分类号
E21D15/38
代理机构
代理人
主权项
地址
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