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经营范围
发明名称
Разделительное устройство для телефонных цепей
摘要
申请公布号
SU98147(A1)
申请公布日期
1953.11.30
申请号
SU19494313406
申请日期
1949.11.01
申请人
NIKULINA R.A.;OVCHINNIKOVA A.M.;PADERNO I.P.
发明人
NIKULINA R.A.;OVCHINNIKOVA A.M.;PADERNO I.P.
分类号
H04B1/44
主分类号
H04B1/44
代理机构
代理人
主权项
地址
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