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发明名称
Printing mechanism for card controlled accounting machines
摘要
申请公布号
US1835466(A)
申请公布日期
1931.12.08
申请号
US19280286283
申请日期
1928.06.18
申请人
THE TABULATING MACHINE COMPANY
发明人
CARROLL FRED M.
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主分类号
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