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发明名称
AUTOMATIC RESTORATION SYSTEM FOR TRUNK LINE TO TRUNK LINE CONNECTION
摘要
申请公布号
JPH04151954(A)
申请公布日期
1992.05.25
申请号
JP19900276834
申请日期
1990.10.16
申请人
NEC ENG LTD
发明人
MATSUOKA YUJI
分类号
H04Q3/545;H04M7/00;H04Q3/58
主分类号
H04Q3/545
代理机构
代理人
主权项
地址
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