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发明名称
Improvements in or relating to slide rules and like calculating apparatus
摘要
申请公布号
GB447001(A)
申请公布日期
1936.05.11
申请号
GB19350015602
申请日期
1935.05.29
申请人
WILLIAM DUBILIER
发明人
分类号
G06G1/00
主分类号
G06G1/00
代理机构
代理人
主权项
地址
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