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发明名称
Вызывное устройство для конференцсвязи
摘要
申请公布号
SU67097(A1)
申请公布日期
1945.11.30
申请号
SU19410309243
申请日期
1941.06.05
申请人
GINZBURG YA.YU.
发明人
GINZBURG YA.YU.
分类号
H04M3/56
主分类号
H04M3/56
代理机构
代理人
主权项
地址
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