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发明名称
Loose-leaf binder
摘要
申请公布号
US1745684(A)
申请公布日期
1930.02.04
申请号
US19250003429
申请日期
1925.01.19
申请人
MCMILLAN BOOK COMPANY
发明人
MCMILLAN JOHN L.
分类号
B42F13/00
主分类号
B42F13/00
代理机构
代理人
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地址
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