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经营范围
发明名称
TONE SIGNAL DETECTION CIRCUIT
摘要
申请公布号
JPS6315551(A)
申请公布日期
1988.01.22
申请号
JP19860161140
申请日期
1986.07.08
申请人
NEC CORP
发明人
NAKAMURA HIROSHI
分类号
H04L27/00
主分类号
H04L27/00
代理机构
代理人
主权项
地址
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