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发明名称	Filter
摘要
申请公布号	US2234678(A)	申请公布日期	1941.03.11
申请号	US19390261457	申请日期	1939.03.13
申请人	HILL-SHAW COMPANY	发明人	MATSON LEROY A.
分类号	A47J31/043	主分类号	A47J31/043
代理机构		代理人
主权项
地址

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