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发明名称
Improvements in or relating to loose-leaf post binders
摘要
申请公布号
GB577732(A)
申请公布日期
1946.05.29
申请号
GB19440015925
申请日期
1944.08.21
申请人
ALFRED GILBERT & SONS LIMITED;ALFRED GILBERT
发明人
分类号
B42F13/12
主分类号
B42F13/12
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