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发明名称
Character-transmission means for traveling message signs
摘要
申请公布号
US3041597(A)
申请公布日期
1962.06.26
申请号
US19610135091
申请日期
1961.06.26
申请人
IRVING NAXON
发明人
NAXON IRVING
分类号
G09G3/00
主分类号
G09G3/00
代理机构
代理人
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