Duplex audio communication system,申请号GB19900007855-传众专利搜索

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发明名称	Duplex audio communication system
摘要
申请公布号	GB2246055(A)	申请公布日期	1992.01.15
申请号	GB19900007855	申请日期	1990.04.06
申请人	* BSB ELECTRONICS LIMITED	发明人	IAN CLIFFORD * BEND
分类号	H04M9/08;H04R3/02	主分类号	H04M9/08
代理机构		代理人
主权项
地址

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