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发明名称
DISPOSITIVO AMPLIFICATO PER CONVERSAZIONI IN DUE SENSI
摘要
申请公布号
IT1200697(B)
申请公布日期
1989.01.27
申请号
IT19850021762
申请日期
1985.07.30
申请人
S.E.T. SVILUPPO EQUIPAGGIAMENTI TELEFONICI S.R.L.
发明人
SACCHI PRIMO
分类号
H04M;(IPC1-7):H04M/
主分类号
H04M
代理机构
代理人
主权项
地址
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