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发明名称
Traffic signal
摘要
申请公布号
US1951431(A)
申请公布日期
1934.03.20
申请号
US19310542733
申请日期
1931.06.08
申请人
MEEHAN JOHN P
发明人
MEEHAN JOHN P.
分类号
G08G1/095
主分类号
G08G1/095
代理机构
代理人
主权项
地址
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