SYSTEME DE CONFERENCE POUR TELEPHONIE,申请号BE19810206696-传众专利搜索

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发明名称	SYSTEME DE CONFERENCE POUR TELEPHONIE
摘要
申请公布号	BE891296(A1)	申请公布日期	1982.06.01
申请号	BE19810206696	申请日期	1981.11.30
申请人	N.V. PHILIPS' GLOEILAMPENFABRIEKEN	发明人
分类号	H04M3/56;(IPC1-7):H04M/	主分类号	H04M3/56
代理机构		代理人
主权项
地址

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