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发明名称
Deck shift control for a card punch
摘要
申请公布号
US2708971(A)
申请公布日期
1955.05.24
申请号
US19520316985
申请日期
1952.10.27
申请人
MICHAEL MAUL
发明人
MAUL MICHAEL
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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