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发明名称
Delinquency card selecting machine
摘要
申请公布号
US2167871(A)
申请公布日期
1939.08.01
申请号
US19370170898
申请日期
1937.10.25
申请人
BOYLAN FELIX T
发明人
BOYLAN FELIX T.
分类号
主分类号
代理机构
代理人
主权项
地址
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