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发明名称
METHOD FOR EXCHANGING TELEPHONE
摘要
申请公布号
JPH0851479(A)
申请公布日期
1996.02.20
申请号
JP19940186931
申请日期
1994.08.09
申请人
NIPPON TELEGR & TELEPH CORP <NTT>
发明人
HIRAI ATSUSHI
分类号
H04M3/50;H04M3/42;(IPC1-7):H04M3/42
主分类号
H04M3/50
代理机构
代理人
主权项
地址
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