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发明名称
Machine-retrievable card andcard retrieval apparatus and method therefor
摘要
申请公布号
USRE32170(E)
申请公布日期
1986.06.03
申请号
US19840608032
申请日期
1984.05.07
申请人
发明人
分类号
G06K19/063;G06K21/00
主分类号
G06K19/063
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代理人
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