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发明名称
LOOP BACK TEST SYSTEM
摘要
申请公布号
JPH0258452(A)
申请公布日期
1990.02.27
申请号
JP19880208016
申请日期
1988.08.24
申请人
NEC CORP;NEC ENG LTD
发明人
YAMAMOTO SEIICHI;MIZUSAWA TSUNETOSHI
分类号
H04L1/24;H04L25/02;H04L29/14
主分类号
H04L1/24
代理机构
代理人
主权项
地址
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