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发明名称
Record perforation analyzing means
摘要
申请公布号
US2484114(A)
申请公布日期
1949.10.11
申请号
US19460684076
申请日期
1946.07.16
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
PAGE RALPH E.;BEATTIE HORACE S.;DALY GEORGE F.
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主分类号
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