An improved method and means for building mine packs for supporting the roof in coal or other mines,申请号GB19340016577-传众专利搜索

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发明名称	An improved method and means for building mine packs for supporting the roof in coal or other mines
摘要
申请公布号	GB435067(A)	申请公布日期	1935.09.13
申请号	GB19340016577	申请日期	1934.06.04
申请人	CYRIL BAGULEY	发明人
分类号	E21D15/58	主分类号	E21D15/58
代理机构		代理人
主权项
地址

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