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发明名称
Tabulating machine
摘要
申请公布号
US2272450(A)
申请公布日期
1942.02.10
申请号
US19310574531
申请日期
1931.11.12
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
WEINLICH HERMANN ADALBERT
分类号
主分类号
代理机构
代理人
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