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发明名称
SYNCHRONOUS NETWORK
摘要
申请公布号
GB8928698(D0)
申请公布日期
1990.02.28
申请号
GB19890028698
申请日期
1989.12.20
申请人
STC PLC
发明人
分类号
H04J3/06;H04J14/02
主分类号
H04J3/06
代理机构
代理人
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