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发明名称
Tabulating machine
摘要
申请公布号
US2153167(A)
申请公布日期
1939.04.04
申请号
US19300430257
申请日期
1930.02.21
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
BRYCE JAMES W.;DALY GEORGE F.
分类号
主分类号
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代理人
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