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发明名称
Loose leaf binder construction
摘要
申请公布号
US3252461(A)
申请公布日期
1966.05.24
申请号
US19640357565
申请日期
1964.04.06
申请人
NATIONAL BLANK BOOK COMPANY
发明人
SCHADE FRANK STANLEY
分类号
B42F13/28
主分类号
B42F13/28
代理机构
代理人
主权项
地址
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