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发明名称
SIGNAL EXCHANGE
摘要
申请公布号
JPS6460128(A)
申请公布日期
1989.03.07
申请号
JP19870217118
申请日期
1987.08.31
申请人
NEC CORP
发明人
ITOU YOSHIKO;SHIMIZU JUNICHI;TAKAGI KAZUHIKO
分类号
H04L13/08;H04L13/00;H04L29/06
主分类号
H04L13/08
代理机构
代理人
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地址
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