Hydraulic pit prop with extended lift,申请号GB19630004205-传众专利搜索

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发明名称	Hydraulic pit prop with extended lift
摘要
申请公布号	GB1026136(A)	申请公布日期	1966.04.14
申请号	GB19630004205	申请日期	1963.02.01
申请人	BWG BERGWERK- UND WALZWERK-MASCHINENBAU G.M.B.H.	发明人
分类号	E21D15/44	主分类号	E21D15/44
代理机构		代理人
主权项
地址

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