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发明名称
Improvements in filing systems for documents
摘要
申请公布号
GB866009(A)
申请公布日期
1961.04.26
申请号
GB19570025223
申请日期
1957.08.09
申请人
ARIANEX
发明人
分类号
B42F17/00
主分类号
B42F17/00
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代理人
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