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发明名称
Improvements in or relating to data card sensing
摘要
申请公布号
GB796385(A)
申请公布日期
1958.06.11
申请号
GB19560018335
申请日期
1956.06.13
申请人
SPERRY RAND CORPORATION
发明人
分类号
G06K7/016
主分类号
G06K7/016
代理机构
代理人
主权项
地址
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