Push-broom-type vacuum cleaner,申请号US19370180530-传众专利搜索

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发明名称	Push-broom-type vacuum cleaner
摘要
申请公布号	US2210724(A)	申请公布日期	1940.08.06
申请号	US19370180530	申请日期	1937.12.18
申请人	QUADREX CORPORATION	发明人	LEATHERS WARD
分类号	A47L5/24;A47L5/28;A47L9/00;A47L9/12;A47L9/14	主分类号	A47L5/24
代理机构		代理人
主权项
地址

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