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发明名称
Tabulating machine
摘要
申请公布号
US1954053(A)
申请公布日期
1934.04.10
申请号
US19310547199
申请日期
1931.06.27
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
KEEN HAROLD HALL
分类号
主分类号
代理机构
代理人
主权项
地址
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