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发明名称
CIRCUITO DI COMANDO PER L'INTERFACCIA DI UN QUADRO DI COMANDO DI UTENTE DI UN SISTEMA CENTREX DI COMMUTAZIONE TELEFONICA
摘要
申请公布号
IT1221031(B)
申请公布日期
1990.06.21
申请号
IT19860022724
申请日期
1986.12.17
申请人
GTE COMMUNICATION SYSTEMS CORP.
发明人
BLACK JAMES B.
分类号
H04Q11/06;(IPC1-7):H04M/
主分类号
H04Q11/06
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代理人
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