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发明名称
Slide rule
摘要
申请公布号
US2649247(A)
申请公布日期
1953.08.18
申请号
US19510243027
申请日期
1951.08.22
申请人
BARBER-COLMAN COMPANY
发明人
STIBITZ GEORGE R.
分类号
G06G1/10
主分类号
G06G1/10
代理机构
代理人
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