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发明名称
Improvements in loose-leaf binders
摘要
申请公布号
GB352151(A)
申请公布日期
1931.07.09
申请号
GB19300014211
申请日期
1930.05.08
申请人
JAMES SAMUEL KING;CHARLES KNIGHT & COMPANY, LIMITED
发明人
分类号
B42F13/04
主分类号
B42F13/04
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