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发明名称
Improvements in logarithmic calculators
摘要
申请公布号
GB688639(A)
申请公布日期
1953.03.11
申请号
GB19500008934
申请日期
1950.04.11
申请人
MARIO ABEILLE;VINCENZO AQUILECCHIA
发明人
分类号
G06G1/00
主分类号
G06G1/00
代理机构
代理人
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