Improvements in and relating to sound absorbing ventilating casement windows,申请号GB19370021823-传众专利搜索

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发明名称	Improvements in and relating to sound absorbing ventilating casement windows
摘要
申请公布号	GB490796(A)	申请公布日期	1938.08.22
申请号	GB19370021823	申请日期	1937.08.07
申请人	ERNEST THOMAS FISK	发明人
分类号	E06B7/02;E06B7/10	主分类号	E06B7/02
代理机构		代理人
主权项
地址

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