Improvements in or relating to yieldable metal mining support structures,申请号GB19540018595-传众专利搜索

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发明名称	Improvements in or relating to yieldable metal mining support structures
摘要
申请公布号	GB791518(A)	申请公布日期	1958.03.05
申请号	GB19540018595	申请日期	1954.06.24
申请人	AUGUST THYSSEN-HUETTE AKTIENGESELLSCHAFT	发明人
分类号	E21D11/18;E21D15/22	主分类号	E21D11/18
代理机构		代理人
主权项
地址

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