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发明名称
COMMUNICATION LINE DIAGNOSTIC SYSTEM
摘要
申请公布号
JPH0377454(A)
申请公布日期
1991.04.03
申请号
JP19890213438
申请日期
1989.08.19
申请人
FUJITSU LTD
发明人
YUZAWA HIROSHI
分类号
H04L12/42
主分类号
H04L12/42
代理机构
代理人
主权项
地址
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