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发明名称
Multi-index-insert card for filing systems
摘要
申请公布号
US2135708(A)
申请公布日期
1938.11.08
申请号
US19350000319
申请日期
1935.01.04
申请人
THE SHAW-WALKER COMPANY
发明人
GILLETTE LA VERGNE W.
分类号
B42F17/00
主分类号
B42F17/00
代理机构
代理人
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地址
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