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发明名称
Improvements in or relating to slide rules
摘要
申请公布号
GB586215(A)
申请公布日期
1947.03.11
申请号
GB19440017996
申请日期
1944.09.21
申请人
EDWARD JOHN WALTER;ROBERT LANSDOWN
发明人
分类号
G06G1/12
主分类号
G06G1/12
代理机构
代理人
主权项
地址
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