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发明名称
Improvements in and relating to ring binders
摘要
申请公布号
GB977492(A)
申请公布日期
1964.12.09
申请号
GB19620047619
申请日期
1962.12.17
申请人
JAMES BURN & CO. LIMITED
发明人
GALLIFORD EDGAR HORACE
分类号
B42F13/40
主分类号
B42F13/40
代理机构
代理人
主权项
地址
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