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发明名称
Appareil d'exploitation minière
摘要
申请公布号
FR1352782(A)
申请公布日期
1964.02.14
申请号
FR19630931785
申请日期
1963.04.17
申请人
DOWTY TECHNICAL DEVELOPMENTS LIMITED
发明人
THOMAS DAVID GURNEY ARNOLD;CARNEGIE JAMES
分类号
E21D23/00
主分类号
E21D23/00
代理机构
代理人
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地址
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