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发明名称
Control card blank
摘要
申请公布号
US2195860(A)
申请公布日期
1940.04.02
申请号
US19360113562
申请日期
1936.12.01
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
GEORGE HARRY O.;SKOFTELAND THOMAS R.
分类号
G06K19/02
主分类号
G06K19/02
代理机构
代理人
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