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经营范围
发明名称
Loose leaf binder
摘要
申请公布号
US2054793(A)
申请公布日期
1936.09.22
申请号
US19340743084
申请日期
1934.09.07
申请人
WILSON-JONES COMPANY
发明人
DEWAR ROBERT J.
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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