IMPROVEMENTS IN MINE ROOF SUPPORT RUNNER BARS,申请号GB19680001280-传众专利搜索

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发明名称	IMPROVEMENTS IN MINE ROOF SUPPORT RUNNER BARS
摘要
申请公布号	GB1221063(A)	申请公布日期	1971.02.03
申请号	GB19680001280	申请日期	1968.01.09
申请人	COAL INDUSTRY (PATENTS) LIMITED	发明人	DENNIS HENRY CANNON;DENNIS FRANKLIN RUTHERFORD;JOHN DENNIS SAMPSON;EDWARD BRYAN CLARKE
分类号	E21D17/086	主分类号	E21D17/086
代理机构		代理人
主权项
地址

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