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发明名称
Installation et appareil de soutènement hydraulique pour mines
摘要
申请公布号
FR1153880(A)
申请公布日期
1958.03.28
申请号
FRD1153880
申请日期
1956.04.03
申请人
DOWTY MINING EQUIPMENT LIMITED
发明人
分类号
E21D23/16
主分类号
E21D23/16
代理机构
代理人
主权项
地址
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