Improvements in or relating to ventilating devices for use in connection with heating radiators,申请号GB19370006803-传众专利搜索

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发明名称	Improvements in or relating to ventilating devices for use in connection with heating radiators
摘要
申请公布号	GB490702(A)	申请公布日期	1938.08.19
申请号	GB19370006803	申请日期	1937.03.08
申请人	JACOB LUDVIG HELLEN	发明人
分类号	F24D19/00	主分类号	F24D19/00
代理机构		代理人
主权项
地址

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