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发明名称
Automatic timing switch for traffic signals
摘要
申请公布号
US1969293(A)
申请公布日期
1934.08.07
申请号
US19280270845
申请日期
1928.04.18
申请人
CROUSE-HINDS COMPANY
发明人
BISSELL CARL H.
分类号
G08G1/085
主分类号
G08G1/085
代理机构
代理人
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