Устройство для исправления частотной характеристики громкоговорящей установки,申请号SU19330122886-传众专利搜索

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发明名称	Устройство для исправления частотной характеристики громкоговорящей установки
摘要
申请公布号	SU32559(A1)	申请公布日期	1933.10.31
申请号	SU19330122886	申请日期	1933.01.27
申请人	RODMAN M.I.	发明人	RODMAN M.I.
分类号	H04M9/08	主分类号	H04M9/08
代理机构		代理人
主权项
地址

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