Negative feedback amplifier,申请号US19370170563-传众专利搜索

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法人/股东/高管

发明名称	Negative feedback amplifier
摘要
申请公布号	US2207962(A)	申请公布日期	1940.07.16
申请号	US19370170563	申请日期	1937.10.23
申请人	SIEMENS & HALSKE, AKTIENGESELLSCHAFT	发明人	WERRMANN HELLMUT
分类号	H03F1/36	主分类号	H03F1/36
代理机构		代理人
主权项
地址

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