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发明名称
Process and apparatus for rejuvenating perforated accounting-machine cards
摘要
申请公布号
US1777947(A)
申请公布日期
1930.10.07
申请号
US19270230198
申请日期
1927.10.31
申请人
ANDRE VALTAT RAYMOND LOUIS
发明人
VALTAT RAYMOND LOUIS ANDRE
分类号
G06K21/08
主分类号
G06K21/08
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