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发明名称
Key actuated punch
摘要
申请公布号
US2620877(A)
申请公布日期
1952.12.09
申请号
US19500144165
申请日期
1950.02.14
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
FURMAN FRANK J.
分类号
主分类号
代理机构
代理人
主权项
地址
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