An improved fire-place closure for use when chimney sweeping,申请号GB19490001802-传众专利搜索

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发明名称	An improved fire-place closure for use when chimney sweeping
摘要
申请公布号	GB657160(A)	申请公布日期	1951.09.12
申请号	GB19490001802	申请日期	1949.01.22
申请人	RICHARD DOUGLAS CHALLIS	发明人
分类号	F23J3/02	主分类号	F23J3/02
代理机构		代理人
主权项
地址

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