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发明名称
Self-righting traffic cone
摘要
申请公布号
US3386409(A)
申请公布日期
1968.06.04
申请号
US19670638852
申请日期
1967.05.16
申请人
R. E. DIETZ COMPANY
发明人
DAWSON ROBERT E.
分类号
E01F9/012
主分类号
E01F9/012
代理机构
代理人
主权项
地址
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