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发明名称
Road sign with location indicator
摘要
申请公布号
US2492679(A)
申请公布日期
1949.12.27
申请号
US19450616725
申请日期
1945.09.17
申请人
BEATTY DONALD C
发明人
BEATTY DONALD C.
分类号
G08B5/00;G08G1/09;G09B29/10
主分类号
G08B5/00
代理机构
代理人
主权项
地址
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