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发明名称
Emergency road flag
摘要
申请公布号
US2887983(A)
申请公布日期
1959.05.26
申请号
US19570698152
申请日期
1957.11.22
申请人
BUDD MARSHALL M
发明人
BUDD MARSHALL M.
分类号
B60Q7/00;G09F17/00
主分类号
B60Q7/00
代理机构
代理人
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地址
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