Narrow band selective circuit arrangements,申请号US19560620860-传众专利搜索

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发明名称	Narrow band selective circuit arrangements
摘要
申请公布号	US2813974(A)	申请公布日期	1957.11.19
申请号	US19560620860	申请日期	1956.11.07
申请人	MARCONI'S WIRELESS TELEGRAPH COMPANY LIMITED	发明人	KEALL OSWOLD EDWARD
分类号	H03D1/22;H04B1/16	主分类号	H03D1/22
代理机构		代理人
主权项
地址

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