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发明名称
DATA ENTRY DEVICE
摘要
申请公布号
GB1316215(A)
申请公布日期
1973.05.09
申请号
GB19710036820
申请日期
1971.08.05
申请人
NATIONAL CASH REGISTER CO
发明人
分类号
H03M11/20;(IPC1-7):G06C7/02
主分类号
H03M11/20
代理机构
代理人
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