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经营范围
发明名称
Loose-leaf binder
摘要
申请公布号
US2218307(A)
申请公布日期
1940.10.15
申请号
US19390259149
申请日期
1939.03.01
申请人
WILSON-JONES COMPANY
发明人
BUENGER EDWARD F.
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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