Mophead having dual working surfaces,申请号US19500199068-传众专利搜索

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发明名称	Mophead having dual working surfaces
摘要
申请公布号	US2665441(A)	申请公布日期	1954.01.12
申请号	US19500199068	申请日期	1950.12.04
申请人	BING GOON WONG	发明人	GOON WONG BING
分类号	A47L13/44	主分类号	A47L13/44
代理机构		代理人
主权项
地址

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