An improved water flow timing valve,申请号GB19300025321-传众专利搜索

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发明名称	An improved water flow timing valve
摘要
申请公布号	GB360534(A)	申请公布日期	1931.11.12
申请号	GB19300025321	申请日期	1930.08.25
申请人	DONALD ELDER	发明人
分类号	F16K21/16	主分类号	F16K21/16
代理机构		代理人
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