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发明名称
ISDN NETWORK TERMINATION UNIT
摘要
申请公布号
GB8913119(D0)
申请公布日期
1989.07.26
申请号
GB19890013119
申请日期
1989.06.07
申请人
NEC CORPORATION
发明人
分类号
H04Q5/00;H04M11/00;H04Q11/04
主分类号
H04Q5/00
代理机构
代理人
主权项
地址
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