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经营范围
发明名称
RING NETWORK SWITCHING CONTROL DEVICE
摘要
申请公布号
EP0403973(A3)
申请公布日期
1991.08.28
申请号
EP19900111330
申请日期
1990.06.15
申请人
FUJITSU LIMITED
发明人
MATSUSHITA, AKIHIRO;TAKEMURA, SHINYA;WATANABE, TOSHIO;SAKAI, SHIGEO;FUKUDA, NOBUO
分类号
H04L12/437;(IPC1-7):H04L12/42;H04B1/74;H04L29/14
主分类号
H04L12/437
代理机构
代理人
主权项
地址
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