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发明名称
Road map holder
摘要
申请公布号
US1842743(A)
申请公布日期
1932.01.26
申请号
US19310549073
申请日期
1931.07.06
申请人
JAMES BRACKETT THOMAS
发明人
BRACKETT THOMAS JAMES
分类号
G09B29/10
主分类号
G09B29/10
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