Electrical filter,申请号US19520310291-传众专利搜索

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发明名称	Electrical filter
摘要
申请公布号	US2808573(A)	申请公布日期	1957.10.01
申请号	US19520310291	申请日期	1952.09.18
申请人	ALLEN B. DU MONT LABORATORIES, INC.	发明人	JR. JOHN M. DE BELL,
分类号	H01P1/213	主分类号	H01P1/213
代理机构		代理人
主权项
地址

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