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发明名称
Ultrasonic vehicle detection system
摘要
申请公布号
US3087140(A)
申请公布日期
1963.04.23
申请号
US19600037165
申请日期
1960.06.20
申请人
GENERAL RAILWAY SIGNAL COMPANY
发明人
O'NEILL JEROME
分类号
G08G1/04
主分类号
G08G1/04
代理机构
代理人
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地址
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