Suction device for vacuum cleaners,申请号US19390286832-传众专利搜索

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发明名称	Suction device for vacuum cleaners
摘要
申请公布号	US2245989(A)	申请公布日期	1941.06.17
申请号	US19390286832	申请日期	1939.07.27
申请人	QUADREX CORPORATION	发明人	LEATHERS WARD
分类号	A47L5/22	主分类号	A47L5/22
代理机构		代理人
主权项
地址

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