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发明名称
Improvements relating to loose leaf binders
摘要
申请公布号
GB345821(A)
申请公布日期
1931.04.02
申请号
GB19300010154
申请日期
1930.03.31
申请人
MORLAND & IMPEY LIMITED;FRANCIS LEVITT IMPEY
发明人
分类号
B42F13/12
主分类号
B42F13/12
代理机构
代理人
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