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发明名称
Slide rule
摘要
申请公布号
GB1046023(A)
申请公布日期
1966.10.19
申请号
GB19610041838
申请日期
1961.11.22
申请人
JOHN CHORTON
发明人
分类号
G06G1/02
主分类号
G06G1/02
代理机构
代理人
主权项
地址
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