Filter and method of making the same,申请号US19520294450-传众专利搜索

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发明名称	Filter and method of making the same
摘要
申请公布号	US2672213(A)	申请公布日期	1954.03.16
申请号	US19520294450	申请日期	1952.06.19
申请人	THE HOOVER COMPANY	发明人	CROPLEY WILLIAM D.
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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