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发明名称
ELECTRONIC EXCHANGE
摘要
申请公布号
JPH02164170(A)
申请公布日期
1990.06.25
申请号
JP19880319823
申请日期
1988.12.19
申请人
TOSHIBA CORP;NIPPON TELEGR & TELEPH CORP <NTT>
发明人
ISHII KENICHI;KUMAGAI NOBORU;ISHIKAWA KIYOSHI
分类号
H04M3/22
主分类号
H04M3/22
代理机构
代理人
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