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发明名称
Traffic signal
摘要
申请公布号
US2258764(A)
申请公布日期
1941.10.14
申请号
US19390304764
申请日期
1939.11.16
申请人
PATRICK G. HUGHES;PAUL O. KOCK;CARL R. KARST
发明人
HUGHES PATRICK G.;KOCK PAUL O.
分类号
G08G1/096
主分类号
G08G1/096
代理机构
代理人
主权项
地址
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