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发明名称
Calculating apparatus for resolving problems of distribution
摘要
申请公布号
GB833531(A)
申请公布日期
1960.04.27
申请号
GB19570012427
申请日期
1957.04.16
申请人
ROBERT LEVI
发明人
分类号
G06G5/00
主分类号
G06G5/00
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代理人
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