OMNIPHONIC MICROPHONE AND LOUDSPEAKER SYSTEM,申请号EP19870306533-传众专利搜索

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发明名称	OMNIPHONIC MICROPHONE AND LOUDSPEAKER SYSTEM
摘要
申请公布号	EP0256688(A3)	申请公布日期	1989.05.17
申请号	EP19870306533	申请日期	1987.07.23
申请人	WEHNER, RAYMOND	发明人	WEHNER, RAYMOND
分类号	H04R1/40;B63B35/81;H04R5/02;H04R5/027;(IPC1-7):H04R5/027	主分类号	H04R1/40
代理机构		代理人
主权项
地址

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