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发明名称
MULTI-PLACE CONFERENCE SYSTEM
摘要
申请公布号
JPH0491550(A)
申请公布日期
1992.03.25
申请号
JP19900209515
申请日期
1990.08.07
申请人
NEC CORP
发明人
NISHII YASUHIRO
分类号
H04M3/56
主分类号
H04M3/56
代理机构
代理人
主权项
地址
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