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发明名称
Improvements in card indexes
摘要
申请公布号
GB389260(A)
申请公布日期
1933.03.16
申请号
GB19320004891
申请日期
1932.02.18
申请人
REMINGTON RAND INC.
发明人
分类号
B42F17/00
主分类号
B42F17/00
代理机构
代理人
主权项
地址
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