Bag emptying device for vacuum cleaners,申请号US19380206726-传众专利搜索

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发明名称	Bag emptying device for vacuum cleaners
摘要
申请公布号	US2224093(A)	申请公布日期	1940.12.03
申请号	US19380206726	申请日期	1938.05.09
申请人	R. B. SMALL	发明人	LEATHERS WARD
分类号	A47L9/14	主分类号	A47L9/14
代理机构		代理人
主权项
地址

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