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发明名称
ELECTRONIC EXCHANGE
摘要
申请公布号
JPH0472846(A)
申请公布日期
1992.03.06
申请号
JP19900184617
申请日期
1990.07.12
申请人
TOSHIBA CORP;NIPPON TELEGR & TELEPH CORP <NTT>
发明人
ONISHI KENJI;HIRAI JUN;YOSHIHARA KATSUNORI;HOSAKA MITSURU;SHIRAKAWA MASAKAZU;MURAI TOSHIO
分类号
H04M3/00;H04Q11/04
主分类号
H04M3/00
代理机构
代理人
主权项
地址
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