Усилитель низкой частоты,申请号SU19470355233-传众专利搜索

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法人/股东/高管

发明名称	Усилитель низкой частоты
摘要
申请公布号	SU82957(A1)	申请公布日期	1949.11.30
申请号	SU19470355233	申请日期	1947.03.21
申请人	GUROVICH G.YA.	发明人	GUROVICH G.YA.
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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