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经营范围
发明名称
Improvements in or relating to calculating machines
摘要
申请公布号
GB640347(A)
申请公布日期
1950.07.19
申请号
GB19460015176
申请日期
1946.05.20
申请人
FELT & TARRANT MANUFACTURING COMPANY
发明人
分类号
G06C7/06
主分类号
G06C7/06
代理机构
代理人
主权项
地址
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