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发明名称
Card filing compartment
摘要
申请公布号
US2341639(A)
申请公布日期
1944.02.15
申请号
US19400358039
申请日期
1940.09.23
申请人
PER MATHIESEN NICOLAUS
发明人
MATHIESEN NICOLAUS PER
分类号
B42F17/32;G06K21/02;H01F7/02;H01F7/20
主分类号
B42F17/32
代理机构
代理人
主权项
地址
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