Improvements relating to water heaters,申请号GB19380013465-传众专利搜索

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发明名称	Improvements relating to water heaters
摘要
申请公布号	GB491776(A)	申请公布日期	1938.09.08
申请号	GB19380013465	申请日期	1938.05.05
申请人	JOHN HENRY EWART	发明人
分类号	F24H9/02	主分类号	F24H9/02
代理机构		代理人
主权项
地址

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