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发明名称
CONFERENCE COMMUNICATION SYSTEM
摘要
申请公布号
JPH04264840(A)
申请公布日期
1992.09.21
申请号
JP19910046242
申请日期
1991.02.19
申请人
NIPPON TELEGR & TELEPH CORP <NTT>
发明人
TOKUNAGA YASUSHI;SATO AKIO;YOSHIKAWA KENSHO;OCHI HIROSHI
分类号
H04B7/26;H04L12/18
主分类号
H04B7/26
代理机构
代理人
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地址
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