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发明名称
TONE DETECTION CIRCUIT
摘要
申请公布号
JPH01288155(A)
申请公布日期
1989.11.20
申请号
JP19880116996
申请日期
1988.05.16
申请人
NEC CORP
发明人
YOSHIDA IKUO
分类号
H04M11/00;H04M1/64;H04Q1/46
主分类号
H04M11/00
代理机构
代理人
主权项
地址
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