Roof support units for mines,申请号GB19610035302-传众专利搜索

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发明名称	Roof support units for mines
摘要
申请公布号	GB1031394(A)	申请公布日期	1966.06.02
申请号	GB19610035302	申请日期	1961.09.29
申请人	ELECTRO-HYDRAULICS LIMITED	发明人	LEE ROGER DEMANT
分类号	E21D23/00	主分类号	E21D23/00
代理机构		代理人
主权项
地址

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