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发明名称
DISPOSIZIONE CIRCUITALE PER L AN NUNCIO AUTOMATICO DI COMUNICAZIO NI AD UTENTI CHIAMANTI IN IMPIANTI DI TELECOMUNICAZIONI SPECIE IN IMPIANTI DI COMMUTAZIONE TELEFO NICA
摘要
申请公布号
IT946937(B)
申请公布日期
1973.05.21
申请号
IT19720019832
申请日期
1972.01.26
申请人
SIEMENS AG
发明人
分类号
H04M3/487;H04Q3/00;(IPC1-7):H04M/
主分类号
H04M3/487
代理机构
代理人
主权项
地址
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