Improvements in or relating to mine roof supports and the operation thereof,申请号GB19640005273-传众专利搜索

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发明名称	Improvements in or relating to mine roof supports and the operation thereof
摘要
申请公布号	GB1085274(A)	申请公布日期	1967.09.27
申请号	GB19640005273	申请日期	1964.02.07
申请人	GULLICK LIMITED	发明人	LEN ARCHELAIUS DAWSON AL;WARD RICHARD
分类号	E21D23/12;E21D23/14	主分类号	E21D23/12
代理机构		代理人
主权项
地址

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