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经营范围
发明名称
TRAFFIC SIGNAL
摘要
申请公布号
CA406247(A)
申请公布日期
1942.07.21
申请号
CAD406247
申请日期
申请人
AUTOMATIC SIGNAL CORPORATION;NORTHERN ELECTRIC COMPANY
发明人
JOSEPH N. PAUL
分类号
主分类号
代理机构
代理人
主权项
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