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发明名称
IMPROVED MEANS OF LOOSE LEAF BINDING OF PAPERS
摘要
申请公布号
GB9100666(D0)
申请公布日期
1991.02.27
申请号
GB19910000666
申请日期
1991.01.11
申请人
KNEE, GERALD J
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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