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发明名称
Identification device
摘要
申请公布号
US1851491(A)
申请公布日期
1932.03.29
申请号
US19300489958
申请日期
1930.10.20
申请人
HAROLD BROWN
发明人
BROWN HAROLD
分类号
G09F3/00;G09F7/02
主分类号
G09F3/00
代理机构
代理人
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