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发明名称
Superimposable card search and data storage system
摘要
申请公布号
US3100296(A)
申请公布日期
1963.08.06
申请号
US19600057079
申请日期
1960.08.19
申请人
FREDERICK JONKER
发明人
JONKER FREDERICK
分类号
G06K21/04
主分类号
G06K21/04
代理机构
代理人
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