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发明名称
CONTROLLING RING NETWORK
摘要
申请公布号
GB8602414(D0)
申请公布日期
1986.03.05
申请号
GB19860002414
申请日期
1986.01.31
申请人
HITACHI LTD
发明人
分类号
H04L12/437;(IPC1-7):G08C25/02
主分类号
H04L12/437
代理机构
代理人
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