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发明名称
Improvements in or relating to calculating machines
摘要
申请公布号
GB678299(A)
申请公布日期
1952.09.03
申请号
GB19490026194
申请日期
1949.10.12
申请人
THE BRITISH TABULATING MACHINE COMPANY LIMITED;ALBERT JOHN KEEN
发明人
分类号
G06F7/46
主分类号
G06F7/46
代理机构
代理人
主权项
地址
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