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发明名称
Телефонная трансляция
摘要
申请公布号
SU43046(A1)
申请公布日期
1935.05.31
申请号
SU19340155858
申请日期
1934.10.22
申请人
SPASSKIJ D.S.
发明人
SPASSKIJ D.S.
分类号
H04M3/40
主分类号
H04M3/40
代理机构
代理人
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