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经营范围
发明名称
Card filing equipment
摘要
申请公布号
US2503611(A)
申请公布日期
1950.04.11
申请号
US19460682679
申请日期
1946.07.10
申请人
SOPHIE E. BRUEN;EDNA V. DICKINSON;SARAH M. BULLOCK;G. A. STUART;JAY FISHER;MARIE THOENEN;GEORGE H. FREDERICKSEN;E. M. THORSEN
发明人
分类号
B42F17/02
主分类号
B42F17/02
代理机构
代理人
主权项
地址
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