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发明名称
INDEX CARDS
摘要
申请公布号
IE11242(L)
申请公布日期
1930.07.28
申请号
IED11242
申请日期
1930.01.17
申请人
CARL THORLEIF TOLLEFSEN
发明人
分类号
B42F11/00;(IPC1-7):B42F11/00
主分类号
B42F11/00
代理机构
代理人
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地址
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