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发明名称
TONE DETECTOR
摘要
申请公布号
JPH03253149(A)
申请公布日期
1991.11.12
申请号
JP19900050941
申请日期
1990.03.02
申请人
NEC CORP;NEC MIYAGI LTD
发明人
SHINODA MINORU;NUMATA YOSHIAKI
分类号
H04L27/00;H04Q1/46
主分类号
H04L27/00
代理机构
代理人
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地址
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