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经营范围
发明名称
Filing device
摘要
申请公布号
US2523347(A)
申请公布日期
1950.09.26
申请号
US19440549880
申请日期
1944.08.17
申请人
HERBERT WESTON
发明人
WESTON HERBERT
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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