Electroacoustic transmission plant for reproduction in places with noise disturbances,申请号US19430513137-传众专利搜索

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发明名称	Electroacoustic transmission plant for reproduction in places with noise disturbances
摘要
申请公布号	US2382848(A)	申请公布日期	1945.08.14
申请号	US19430513137	申请日期	1943.12.06
申请人	HANS BAUMGARTNER	发明人	BAUMGARTNER HANS
分类号	H03G3/32;H04R27/00	主分类号	H03G3/32
代理机构		代理人
主权项
地址

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