Improvements in, or relating to, collapsible supporting devices for mine roofs and the like,申请号GB19540029596-传众专利搜索

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发明名称	Improvements in, or relating to, collapsible supporting devices for mine roofs and the like
摘要
申请公布号	GB798722(A)	申请公布日期	1958.07.23
申请号	GB19540029596	申请日期	1954.10.14
申请人	HILL PORTER (NEWCASTLE) LIMITED;ALLEN CLIFFORD TALBOTT	发明人
分类号	E21D15/52;E21D15/58;E21D15/60	主分类号	E21D15/52
代理机构		代理人
主权项
地址

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