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发明名称
Device for sorting data
摘要
申请公布号
US1788411(A)
申请公布日期
1931.01.13
申请号
US19290379778
申请日期
1929.07.20
申请人
SHAFFER ALFRED E
发明人
SHAFFER ALFRED E.
分类号
B42F17/08
主分类号
B42F17/08
代理机构
代理人
主权项
地址
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