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发明名称
Perfectionnements aux ensembles de soutènement mobiles pour mines
摘要
申请公布号
FR1450480(A)
申请公布日期
1966.06.24
申请号
FR19650011185
申请日期
1965.03.30
申请人
DOWTY MINING EQUIPMENT LIMITED
发明人
分类号
E21D23/04;E21D23/08
主分类号
E21D23/04
代理机构
代理人
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