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发明名称
Прибор для демонстрации суточного вращения земли
摘要
申请公布号
SU71058(A1)
申请公布日期
1947.11.30
申请号
SU19460050556
申请日期
1946.08.11
申请人
SHUVALOV V.N.
发明人
SHUVALOV V.N.
分类号
G06G7/02
主分类号
G06G7/02
代理机构
代理人
主权项
地址
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