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发明名称
Refillable binder
摘要
申请公布号
US2051738(A)
申请公布日期
1936.08.18
申请号
US19350054357
申请日期
1935.12.14
申请人
DOROTHY M. OTTINGER
发明人
OTTINGER NATHAN
分类号
B42B5/12
主分类号
B42B5/12
代理机构
代理人
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