SPRAGS FOR MINE ROOF SUPPORTS,申请号GB19790022260-传众专利搜索

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发明名称	SPRAGS FOR MINE ROOF SUPPORTS
摘要
申请公布号	GB2027475(A)	申请公布日期	1980.02.20
申请号	GB19790022260	申请日期	1979.06.26
申请人	FLETCHER SUTCLIFFE WILD LTD	发明人
分类号	E21D23/04;E21D23/06;(IPC1-7):E21D23/00	主分类号	E21D23/04
代理机构		代理人
主权项
地址

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