Vacuum cleaner nozzle construction,申请号US19570677005-传众专利搜索

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发明名称	Vacuum cleaner nozzle construction
摘要
申请公布号	US2950497(A)	申请公布日期	1960.08.30
申请号	US19570677005	申请日期	1957.08.08
申请人	GENERAL ELECTRIC COMPANY	发明人	SMITH ROBERT M.
分类号	A47L9/06	主分类号	A47L9/06
代理机构		代理人
主权项
地址

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