Improvements in and relating to ventilating devices,申请号GB19350017030-传众专利搜索

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发明名称	Improvements in and relating to ventilating devices
摘要
申请公布号	GB449208(A)	申请公布日期	1936.06.23
申请号	GB19350017030	申请日期	1935.06.13
申请人	WILLIAM CRAIG;JOHN CRAIG	发明人
分类号	F23L17/02	主分类号	F23L17/02
代理机构		代理人
主权项
地址

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