Improvements relating to apparatus for ventilating buildings,申请号GB19460035973-传众专利搜索

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发明名称	Improvements relating to apparatus for ventilating buildings
摘要
申请公布号	GB640643(A)	申请公布日期	1950.07.26
申请号	GB19460035973	申请日期	1946.12.05
申请人	HALL & KAY LIMITED;SYDNEY HALL;ALFRED MYERS	发明人
分类号	F24F3/16	主分类号	F24F3/16
代理机构		代理人
主权项
地址

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