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发明名称
PERFORATED INFORMATION AND INDEX CARDS AND METHOD AND APPARATUS FOR THEIR MANUFACTURE AND USE
摘要
申请公布号
CA787156(A)
申请公布日期
1968.06.11
申请号
CAD787156
申请日期
申请人
XEROX CORPORATION
发明人
HANS E. J. NEUGEBAUER
分类号
主分类号
代理机构
代理人
主权项
地址
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