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发明名称
Радиоустройство для секретных двухсторонних переговоров на одной антенне
摘要
申请公布号
SU17424(A1)
申请公布日期
1930.09.30
申请号
SU19290039515
申请日期
1929.01.28
申请人
ALTMAN G.Z.
发明人
ALTMAN G.Z.
分类号
H04K1/00
主分类号
H04K1/00
代理机构
代理人
主权项
地址
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