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发明名称
Loose-leaf binder
摘要
申请公布号
US2421404(A)
申请公布日期
1947.06.03
申请号
US19450607737
申请日期
1945.07.30
申请人
ANDERSKOW ALEX A
发明人
ANDERSKOW ALEX A.
分类号
B42B5/10
主分类号
B42B5/10
代理机构
代理人
主权项
地址
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