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发明名称
PRIVATE LINE BACKUP SYSTEM
摘要
申请公布号
JPH043530(A)
申请公布日期
1992.01.08
申请号
JP19900105544
申请日期
1990.04.19
申请人
MITSUBISHI ELECTRIC CORP
发明人
KOYAMA KEIICHI
分类号
H04B1/74;(IPC1-7):H04B1/74
主分类号
H04B1/74
代理机构
代理人
主权项
地址
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