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发明名称
Relay counter for digraphs, trigraphs, and the like
摘要
申请公布号
US2689686(A)
申请公布日期
1954.09.21
申请号
US19510262792
申请日期
1951.12.21
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
THOLSTRUP HENRY L.
分类号
主分类号
代理机构
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