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发明名称
Improvements in or relating to card index filing devices
摘要
申请公布号
GB770839(A)
申请公布日期
1957.03.27
申请号
GB19550017416
申请日期
1955.06.16
申请人
RUDOLF BRINKMANN TO BROXTEN
发明人
分类号
B42F17/02
主分类号
B42F17/02
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代理人
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