Improvements in fluid pressure relief valves,申请号GB19570004122-传众专利搜索

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发明名称	Improvements in fluid pressure relief valves
摘要
申请公布号	GB845918(A)	申请公布日期	1960.08.24
申请号	GB19570004122	申请日期	1957.02.06
申请人	DOWTY MINING EQUIPMENT LIMITED	发明人
分类号	E21D15/51;F16K17/04	主分类号	E21D15/51
代理机构		代理人
主权项
地址

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