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发明名称
CHANNEL SWITCHING SYSTEM
摘要
申请公布号
JPH0214642(A)
申请公布日期
1990.01.18
申请号
JP19880162407
申请日期
1988.07.01
申请人
NEC CORP
发明人
MIYAZAKI MASAHIRO
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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