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发明名称
TONE DETECTION DEVICE
摘要
申请公布号
JPS558120(A)
申请公布日期
1980.01.21
申请号
JP19780080121
申请日期
1978.06.30
申请人
NIPPON ELECTRIC CO
发明人
ARAZEKI TAKU
分类号
H04M11/06;H04B3/20;H04L25/00;H04L27/00;H04M11/00;H04Q1/45
主分类号
H04M11/06
代理机构
代理人
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