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发明名称
DISPOSIZIONE CIRCUITALE PER SORVEGLIARE LINEE DI UTENTE,SPECIE IN IMPIANTI TELEFONICI
摘要
申请公布号
IT1124825(B)
申请公布日期
1986.05.14
申请号
IT19790026903
申请日期
1979.10.30
申请人
SIEMENS AG
发明人
PFEIL DIRSKO VON;REITER GEORG
分类号
H04M3/30;(IPC1-7):H04M/
主分类号
H04M3/30
代理机构
代理人
主权项
地址
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