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经营范围
发明名称
Loose leaf binder
摘要
申请公布号
US2127657(A)
申请公布日期
1938.08.23
申请号
US19360063481
申请日期
1936.02.12
申请人
WILSON-JONES COMPANY
发明人
UNGER PAUL O.
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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