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发明名称
Loose leaf binder
摘要
申请公布号
US2134231(A)
申请公布日期
1938.10.25
申请号
US19370178957
申请日期
1937.12.09
申请人
STATIONERS LOOSE LEAF COMPANY
发明人
LOTTER ADOLPH G.
分类号
B42F13/12
主分类号
B42F13/12
代理机构
代理人
主权项
地址
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