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发明名称
étançon de mine hydraulique à extension amplifiée
摘要
申请公布号
FR1296323(A)
申请公布日期
1962.06.15
申请号
FR19610869328
申请日期
1961.07.28
申请人
B W G BERGWERK- UND WALZWERK-MASCHINENBAU G.M.B.H.
发明人
分类号
E21D15/44;E21D15/48
主分类号
E21D15/44
代理机构
代理人
主权项
地址
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