ELECTROACOUSTIC DISCUSSION ARRANGEMENT,申请号EP19860115481-传众专利搜索

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发明名称	ELECTROACOUSTIC DISCUSSION ARRANGEMENT
摘要
申请公布号	EP0224754(B1)	申请公布日期	1992.04.22
申请号	EP19860115481	申请日期	1986.11.07
申请人	BRAEHLER, HELMUT	发明人	BRAEHLER, HELMUT
分类号	H04R27/00	主分类号	H04R27/00
代理机构		代理人
主权项
地址

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