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发明名称
DIGITAL SUBSCRIBER LINE FAULT MONITOR SYSTEM
摘要
申请公布号
JPH0248849(A)
申请公布日期
1990.02.19
申请号
JP19880199109
申请日期
1988.08.10
申请人
FUJITSU LTD
发明人
TSUTSUMI KENJI;ISE NOBORU;SHIMOZONO RYOJI;OGAWA YASUNORI
分类号
H04M3/22
主分类号
H04M3/22
代理机构
代理人
主权项
地址
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