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发明名称
CIRCUIT SWITCHING SYSTEM
摘要
申请公布号
JPH02200038(A)
申请公布日期
1990.08.08
申请号
JP19890020310
申请日期
1989.01.30
申请人
NIPPON TELEGR & TELEPH CORP <NTT>
发明人
TATSUNO HIDEO;TOKURA NOBUYUKI;TOKIZAWA IKUO
分类号
H04L12/42
主分类号
H04L12/42
代理机构
代理人
主权项
地址
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