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发明名称
NON-COMMUNICATION TIME SIGNAL SUPPLY SYSTEM FOR SUBSCRIBER CIRCUIT
摘要
申请公布号
JPH0410843(A)
申请公布日期
1992.01.16
申请号
JP19900113613
申请日期
1990.04.27
申请人
NEC CORP
发明人
ENDO OSAMU
分类号
H04Q3/42;H04M3/00;H04Q1/30;H04Q11/04
主分类号
H04Q3/42
代理机构
代理人
主权项
地址
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