Improvements in or relating to valves,申请号GB19450012748-传众专利搜索

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发明名称	Improvements in or relating to valves
摘要
申请公布号	GB592388(A)	申请公布日期	1947.09.16
申请号	GB19450012748	申请日期	1945.05.22
申请人	WALTER DOUGLASS;ALEXANDER CHARLES ELLIS	发明人
分类号	F16K7/08	主分类号	F16K7/08
代理机构		代理人
主权项
地址

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