Multi-level conference management and notification,申请号EP19930309754-传众专利搜索

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发明名称	Multi-level conference management and notification
摘要
申请公布号	EP0604053(B1)	申请公布日期	1999.11.17
申请号	EP19930309754	申请日期	1993.12.06
申请人	AT&T CORP.	发明人	BALES, BRUCE MERRILL;CRUMPLEY, ROBERT LOUIS;GALLAGHER, DONALD DEAN;THIELER, STEPHEN MAX
分类号	H04M3/56;H04N7/15;(IPC1-7):H04M3/56	主分类号	H04M3/56
代理机构		代理人
主权项
地址

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