MINE ROADWAY TEMPORARY SUPPORT,申请号GB19690019835-传众专利搜索

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发明名称	MINE ROADWAY TEMPORARY SUPPORT
摘要
申请公布号	GB1242762(A)	申请公布日期	1971.08.11
申请号	GB19690019835	申请日期	1969.04.18
申请人	COAL INDUSTRY (PATENTS) LIMITED	发明人
分类号	E21D11/40	主分类号	E21D11/40
代理机构		代理人
主权项
地址

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