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发明名称
Counting machine
摘要
申请公布号
US2034542(A)
申请公布日期
1936.03.17
申请号
US19310546712
申请日期
1931.06.25
申请人
THE ACCOUNTING & TABULATING CORPORATION
发明人
THOMAS ARTHUR
分类号
主分类号
代理机构
代理人
主权项
地址
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