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发明名称
Record card sorting collator
摘要
申请公布号
US2990957(A)
申请公布日期
1961.07.04
申请号
US19550554254
申请日期
1955.12.20
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
SARLEY JOSEPH M.;NATVIG JOHN R.
分类号
主分类号
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代理人
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