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发明名称
Sorting machine for record cards
摘要
申请公布号
US2025602(A)
申请公布日期
1935.12.24
申请号
US19320585026
申请日期
1932.01.06
申请人
MICHAEL MAUL
发明人
MAUL MICHAEL
分类号
主分类号
代理机构
代理人
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地址
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