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发明名称
Tabulating machine
摘要
申请公布号
US2110857(A)
申请公布日期
1938.03.15
申请号
US19330656868
申请日期
1933.02.15
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
GARMAN HUGH F.;WOODRUFF HERBERT H.
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主分类号
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代理人
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