Frequency-responsive system,申请号US19470720257-传众专利搜索

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发明名称	Frequency-responsive system
摘要
申请公布号	US2513731(A)	申请公布日期	1950.07.04
申请号	US19470720257	申请日期	1947.01.04
申请人	HAZELTINE RESEARCH, INC.	发明人	LOUGHLIN BERNARD D.
分类号	H03D3/24;H03D11/06	主分类号	H03D3/24
代理机构		代理人
主权项
地址

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