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发明名称
DISPOSITIVO CONVERTITORE TRA SEGNALI ELETTRICI E SEGNALI ACUSTICI IN PARTICOLARE PER APPARECCHI TELEFONICI
摘要
申请公布号
ITMI991428(A1)
申请公布日期
2000.12.29
申请号
IT1999MI01428
申请日期
1999.06.29
申请人
CELTRA S.R.L.
发明人
SIRONI GIOVANNI BATTISTA
分类号
H04M;H04R
主分类号
H04M
代理机构
代理人
主权项
地址
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