Communication system dynamic conferencer circuit,申请号US19860943242-传众专利搜索

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发明名称	Communication system dynamic conferencer circuit
摘要
申请公布号	US4797877(A)	申请公布日期	1989.01.10
申请号	US19860943242	申请日期	1986.12.18
申请人	AMERICAN TELEPHONE AND TELEGRAPH COMPANY;AT&T INFORMATION SYSTEMS INC.	发明人	POPE, KEVIN T.;TRIMBLE, DAVID C.
分类号	H04M9/00;G06F13/20;G06F13/36;H04M3/56;(IPC1-7):H04Q11/04	主分类号	H04M9/00
代理机构		代理人
主权项
地址

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