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经营范围
发明名称
Circuit controller
摘要
申请公布号
US2187518(A)
申请公布日期
1940.01.16
申请号
US19370160641
申请日期
1937.08.24
申请人
THE UNION SWITCH & SIGNAL COMPANY
发明人
MCWHIRTER WILLIAM C.
分类号
B61L23/04
主分类号
B61L23/04
代理机构
代理人
主权项
地址
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