Improvements in or relating to Self-Advancing Mine Roof Supports,申请号GB19660058353-传众专利搜索

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发明名称	Improvements in or relating to Self-Advancing Mine Roof Supports
摘要
申请公布号	GB1159495(A)	申请公布日期	1969.07.23
申请号	GB19660058353	申请日期	1966.12.23
申请人	GULLICK LIMITED	发明人	LESLIE JOHN ARNOTT
分类号	E21D23/00;E21D23/04	主分类号	E21D23/00
代理机构		代理人
主权项
地址

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