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经营范围
发明名称
DEVICE FOR SUPPORTING INDEX CARDS
摘要
申请公布号
GB1292370(A)
申请公布日期
1972.10.11
申请号
GB19700027725
申请日期
1970.06.09
申请人
PRATIC BURO
发明人
分类号
B42F17/02
主分类号
B42F17/02
代理机构
代理人
主权项
地址
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