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发明名称
Наглядное учебное пособие по теоретической механике
摘要
申请公布号
SU91983(A1)
申请公布日期
1950.11.30
申请号
SU19500434525
申请日期
1950.09.12
申请人
VINOGRADOV P.A.
发明人
VINOGRADOV P.A.
分类号
G09B23/18
主分类号
G09B23/18
代理机构
代理人
主权项
地址
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