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发明名称
Improvements in loose-leaf binders
摘要
申请公布号
GB519400(A)
申请公布日期
1940.03.26
申请号
GB19380030584
申请日期
1938.10.22
申请人
PHILLIP BENNETT
发明人
分类号
B42F13/00
主分类号
B42F13/00
代理机构
代理人
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