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发明名称
REGISTRO DIGITAL,EM MAQUINA DE CALCULAR,DE SINALIZACAO MULTIFREQUENCIAL DE CENTRAIS TELEFONICAS
摘要
申请公布号
BR6100136(U)
申请公布日期
1982.09.14
申请号
BR19810000136U
申请日期
1981.02.02
申请人
BRANDAO ROBERTO CANDIDO
发明人
BRANDAO ROBERTO CANDIDO
分类号
H04M3/22;H04Q1/30;(IPC1-7):H04Q1/30;G06K15/18
主分类号
H04M3/22
代理机构
代理人
主权项
地址
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