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经营范围
发明名称
SYNCHRONIZING SWITCHING SYSTEM
摘要
申请公布号
JPH01282937(A)
申请公布日期
1989.11.14
申请号
JP19880111592
申请日期
1988.05.10
申请人
NEC CORP
发明人
TSUDA KIYOSHI
分类号
H04L27/20;H04L1/22
主分类号
H04L27/20
代理机构
代理人
主权项
地址
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