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发明名称
Loose leaf binder
摘要
申请公布号
US2087397(A)
申请公布日期
1937.07.20
申请号
US19350018622
申请日期
1935.04.27
申请人
DINSMOOR WINFIELD L
发明人
DINSMOOR WINFIELD L.
分类号
B42F13/00
主分类号
B42F13/00
代理机构
代理人
主权项
地址
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