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经营范围
发明名称
Amplificateur téléphonique établi sans liaison galvanique.
摘要
申请公布号
BE607643(A4)
申请公布日期
1961.12.18
申请号
BE19610607643
申请日期
1961.08.29
申请人
ICORAPHONE S.A.;BERNARD STEVENS
发明人
分类号
(IPC1-7):H04M
主分类号
(IPC1-7):H04M
代理机构
代理人
主权项
地址
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