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发明名称
Visible card index and signal
摘要
申请公布号
US2595648(A)
申请公布日期
1952.05.06
申请号
US19490131360
申请日期
1949.12.06
申请人
REMINGTON RAND INC.
发明人
EDDY JOHN W.
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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