Apparatus for air purification,申请号US19310542746-传众专利搜索

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发明名称	Apparatus for air purification
摘要
申请公布号	US1986378(A)	申请公布日期	1935.01.01
申请号	US19310542746	申请日期	1931.06.08
申请人	THE UNITED STATES ELECTRICAL TOOL CMPANY	发明人	SMITH JOHN A.
分类号	B24B55/06	主分类号	B24B55/06
代理机构		代理人
主权项
地址

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