Amplifier-filter circuit,申请号US19320629482-传众专利搜索

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发明名称	Amplifier-filter circuit
摘要
申请公布号	US1917947(A)	申请公布日期	1933.07.11
申请号	US19320629482	申请日期	1932.08.19
申请人	WESTERN ELECTRIC COMPANY, INCORPORATED	发明人	NUKIYAMA HEIICHI
分类号	H03H11/12	主分类号	H03H11/12
代理机构		代理人
主权项
地址

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