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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
GB454249(A)
申请公布日期
1936.09.28
申请号
GB19350009441
申请日期
1935.03.26
申请人
CHARLES CAMPBELL;THE BRITISH TABULATING MACHINE COMPANY LIMITED
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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