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发明名称
Traffic control system
摘要
申请公布号
US2287090(A)
申请公布日期
1942.06.23
申请号
US19400320020
申请日期
1940.02.21
申请人
BENJAMIN COOPER
发明人
COOPER BENJAMIN
分类号
G08G1/065
主分类号
G08G1/065
代理机构
代理人
主权项
地址
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