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经营范围
发明名称
Combined binder and display easel
摘要
申请公布号
US2613956(A)
申请公布日期
1952.10.14
申请号
US19500188720
申请日期
1950.10.06
申请人
ERICSON ELMER W
发明人
ERICSON ELMER W.
分类号
B42F13/40
主分类号
B42F13/40
代理机构
代理人
主权项
地址
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