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发明名称
Stop sign
摘要
申请公布号
US2519145(A)
申请公布日期
1950.08.15
申请号
US19460679025
申请日期
1946.06.24
申请人
MANLY HOMER D
发明人
MANLY HOMER D.
分类号
E01F9/04
主分类号
E01F9/04
代理机构
代理人
主权项
地址
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