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发明名称
PROCEDIMENTO E DISPOSITIVO PER IL RICONOSCIMENTO DEL TONO DI DISABILITAZIONE DEL CANCELLATORE D'ECO IN UNA CENTRALE TELEFONICA DI COMMUTAZIONE
摘要
申请公布号
ITMI930212(A1)
申请公布日期
1994.08.10
申请号
IT1993MI00212
申请日期
1993.02.09
申请人
ITALTEL SOCIETA' ITALIANA TELECOMUNICAZIONI SPA
发明人
RAVEGLIA DALMAZIO;SARTORELLO PAOLO
分类号
H04B3/23;H04M
主分类号
H04B3/23
代理机构
代理人
主权项
地址
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