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经营范围
发明名称
PRIVATE BRANCH EXCHANGE SYSTEM
摘要
申请公布号
JPH0199397(A)
申请公布日期
1989.04.18
申请号
JP19870256979
申请日期
1987.10.12
申请人
TOSHIBA CORP;NIPPON TELEGR & TELEPH CORP <NTT>
发明人
NEMOTO JUNICHIRO;IKEGAMI MASAHITO;KATO MAMORU
分类号
H04Q3/58
主分类号
H04Q3/58
代理机构
代理人
主权项
地址
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