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经营范围
发明名称
Signal and lighting unit
摘要
申请公布号
US1954591(A)
申请公布日期
1934.04.10
申请号
US19320602714
申请日期
1932.04.02
申请人
WELSBACH TRAFFIC SIGNAL COMPANY
发明人
KEITH WILLIAM G.;MANARIK JOSEPH A.
分类号
F21V7/04
主分类号
F21V7/04
代理机构
代理人
主权项
地址
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