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经营范围
发明名称
DIGITAL SWITCHING SYSTEM
摘要
申请公布号
JPS6418336(A)
申请公布日期
1989.01.23
申请号
JP19870174514
申请日期
1987.07.13
申请人
NEC CORP
发明人
IWASAKI SUSUMU;YOSHIDA YOSHINORI
分类号
H04L12/64
主分类号
H04L12/64
代理机构
代理人
主权项
地址
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