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发明名称
Прибор для демонстрации зависимости силы притяжения электромагнита от магнитной проницаемости материала его сердечника
摘要
申请公布号
SU130247(A1)
申请公布日期
1959.11.30
申请号
SU19590640344
申请日期
1959.10.03
申请人
RAJTSYN I.Z.
发明人
RAJTSYN I.Z.
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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