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发明名称
Card punching machine
摘要
申请公布号
US2023376(A)
申请公布日期
1935.12.03
申请号
US19340747890
申请日期
1934.10.11
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
WELLMAN CHARLES O.
分类号
G06K13/04
主分类号
G06K13/04
代理机构
代理人
主权项
地址
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