Improvements in or relating to trough-shaped support sections particularly for sliding arch mine roof supports,申请号GB19590031114-传众专利搜索

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发明名称	Improvements in or relating to trough-shaped support sections particularly for sliding arch mine roof supports
摘要
申请公布号	GB932789(A)	申请公布日期	1963.07.31
申请号	GB19590031114	申请日期	1959.09.11
申请人	MARGOT VON LINSINGEN	发明人
分类号	E21D11/20	主分类号	E21D11/20
代理机构		代理人
主权项
地址

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