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发明名称
RELAY LINE DEVICE
摘要
申请公布号
JPH0334796(A)
申请公布日期
1991.02.14
申请号
JP19890170081
申请日期
1989.06.30
申请人
NEC CORP
发明人
KOBAYASHI YOSHIKAZU
分类号
H04Q3/42;H04M7/00;H04Q1/30;H04Q1/50
主分类号
H04Q3/42
代理机构
代理人
主权项
地址
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