Hydraulically operated roof supports,申请号GB19630010144-传众专利搜索

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发明名称	Hydraulically operated roof supports
摘要
申请公布号	GB1045302(A)	申请公布日期	1966.10.12
申请号	GB19630010144	申请日期	1963.03.14
申请人	ELECTRO-HYDRAULICS LIMITED	发明人	HAROLD ROBERT EDWIN
分类号	E21D15/44;F15B15/16	主分类号	E21D15/44
代理机构		代理人
主权项
地址

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