A hydraulic pit prop,申请号GB19610027092-传众专利搜索

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发明名称	A hydraulic pit prop
摘要
申请公布号	GB956482(A)	申请公布日期	1964.04.29
申请号	GB19610027092	申请日期	1961.07.26
申请人	BWG 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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