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发明名称
Устройство для автоматической регулировки усиления в установке высокочастотного телефонирования
摘要
申请公布号
SU67769(A1)
申请公布日期
1946.11.30
申请号
SU19450339600
申请日期
1945.06.19
申请人
AMARANTOV V.N.
发明人
AMARANTOV V.N.
分类号
H04B3/10;H03G3/00
主分类号
H04B3/10
代理机构
代理人
主权项
地址
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