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发明名称
TRAINER OF RADIO TELEGRAPHYST
摘要
申请公布号
SU888178(A1)
申请公布日期
1981.12.07
申请号
SU19802900694
申请日期
1980.03.20
申请人
KUDRYAVTSEV VIKTOR B,SU;KUDRYASHOV NIKOLAJ,SU;CHIZHOV ALEKSANDR YU,SU
发明人
KUDRYAVTSEV VIKTOR B,SU;KUDRYASHOV NIKOLAJ I,SU;CHIZHOV ALEKSANDR YU,SU
分类号
G09B19/26;(IPC1-7):G09B19/26
主分类号
G09B19/26
代理机构
代理人
主权项
地址
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