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发明名称
Apparatus for preparing statistical records
摘要
申请公布号
US2247905(A)
申请公布日期
1941.07.01
申请号
US19390286441
申请日期
1939.07.25
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
BRYCE JAMES W.
分类号
主分类号
代理机构
代理人
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