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发明名称
Self contained and combined loose leaf binder and display device
摘要
申请公布号
US2883209(A)
申请公布日期
1959.04.21
申请号
US19570662449
申请日期
1957.05.29
申请人
ERICKSON EDWARD C
发明人
ERICKSON EDWARD C.
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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