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发明名称
CIRCUIT FOR DISCRIMINATING RINGING SIGNAL FROM OTHER SIGNALS
摘要
申请公布号
GB9000032(D0)
申请公布日期
1990.03.07
申请号
GB19900000032
申请日期
1990.01.02
申请人
BROTHER KOGYO KABUSHIKI KAISHA
发明人
分类号
H04M1/00;H04M19/02
主分类号
H04M1/00
代理机构
代理人
主权项
地址
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