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发明名称
DATA COMMUNICATION DEVICE SWITCHING DEVICE
摘要
申请公布号
JPS6481436(A)
申请公布日期
1989.03.27
申请号
JP19870237111
申请日期
1987.09.24
申请人
HITACHI LTD
发明人
TAMURA YOSHIO
分类号
H04L29/10;H04L13/00
主分类号
H04L29/10
代理机构
代理人
主权项
地址
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