Improvements in or relating to brackets, primarily intended for attachment to mine roof supports,申请号GB19650007449-传众专利搜索

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发明名称	Improvements in or relating to brackets, primarily intended for attachment to mine roof supports
摘要
申请公布号	GB1147631(A)	申请公布日期	1969.04.02
申请号	GB19650007449	申请日期	1965.02.20
申请人	ENGINEERING DEVELOPMENTS (B'HAM) LIMITED	发明人	JAMES DEREK STUART
分类号	E21D17/03	主分类号	E21D17/03
代理机构		代理人
主权项
地址

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