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发明名称
Electro-analog model equipment of national economic system
摘要
申请公布号
US2916212(A)
申请公布日期
1959.12.08
申请号
US19540445590
申请日期
1954.07.26
申请人
YOSHIHARU MITA
发明人
MITA YOSHIHARU
分类号
G06G7/52
主分类号
G06G7/52
代理机构
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