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发明名称
Follower for vertical files
摘要
申请公布号
US1820888(A)
申请公布日期
1931.08.25
申请号
US19290354886
申请日期
1929.04.13
申请人
REMINGTON RAND INC.
发明人
RAND BENJAMIN G.
分类号
B42F17/02
主分类号
B42F17/02
代理机构
代理人
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