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经营范围
发明名称
MEETING TELEPHONE SYSTEM
摘要
PURPOSE:To enable for a plural number of communicating paths accommodated in one meeting telephone exclusive board simultaneously in common use of separate meetings by dividing them into a plural number of groups.
申请公布号
JPS52134307(A)
申请公布日期
1977.11.10
申请号
JP19760051823
申请日期
1976.05.06
申请人
NIPPON ELECTRIC CO
发明人
KOTOSHI NOBORU
分类号
H04M3/56;(IPC1-7):04M3/56
主分类号
H04M3/56
代理机构
代理人
主权项
地址
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