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发明名称
Improvements in and relating to loose-leaf books
摘要
申请公布号
GB434360(A)
申请公布日期
1935.08.26
申请号
GB19340006114
申请日期
1934.02.24
申请人
LESLIE CHARLES JOHN DAVIS
发明人
分类号
B42F13/16
主分类号
B42F13/16
代理机构
代理人
主权项
地址
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