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发明名称
Учебный прибор
摘要
申请公布号
SU114419(A1)
申请公布日期
1957.11.30
申请号
SU19570586226
申请日期
1957.11.16
申请人
DEMENTEV KH.N.
发明人
DEMENTEV KH.N.
分类号
G09B23/08
主分类号
G09B23/08
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代理人
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