Double dust bag for vacuum cleaners,申请号US19290345943-传众专利搜索

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发明名称	Double dust bag for vacuum cleaners
摘要
申请公布号	US1842294(A)	申请公布日期	1932.01.19
申请号	US19290345943	申请日期	1929.03.11
申请人	WILLIAM SCHRADER OTTO	发明人	SCHRADER OTTO WILLIAM
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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