A new or improved device for preventing chimney down draught,申请号GB19330031051-传众专利搜索

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发明名称	A new or improved device for preventing chimney down draught
摘要
申请公布号	GB429755(A)	申请公布日期	1935.06.06
申请号	GB19330031051	申请日期	1934.11.08
申请人	EDWIN NORTON STREDWICK	发明人
分类号	F23L17/10	主分类号	F23L17/10
代理机构		代理人
主权项
地址

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