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发明名称
IMPROVEMENTS IN OR RELATING TO CALCULATING MACHINES
摘要
申请公布号
GB1261710(A)
申请公布日期
1972.01.26
申请号
GB19680034314
申请日期
1968.07.18
申请人
BELL PUNCH COMPANY LIMITED
发明人
JAMES JOHN DRAGE
分类号
G06F7/495;G06F7/50
主分类号
G06F7/495
代理机构
代理人
主权项
地址
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