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发明名称
Visual card rotary index
摘要
申请公布号
US3279471(A)
申请公布日期
1966.10.18
申请号
US19650476916
申请日期
1965.08.03
申请人
IRVING RUINA
发明人
RUINA IRVING
分类号
B42F17/28
主分类号
B42F17/28
代理机构
代理人
主权项
地址
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