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发明名称
Calculating machine
摘要
申请公布号
US2113612(A)
申请公布日期
1938.04.12
申请号
US19340706104
申请日期
1934.01.10
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
CAMPBELL CHARLES
分类号
G06F7/46
主分类号
G06F7/46
代理机构
代理人
主权项
地址
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