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发明名称
Circuit controller
摘要
申请公布号
US2454702(A)
申请公布日期
1948.11.23
申请号
US19460649599
申请日期
1946.02.23
申请人
THE UNION SWITCH & SIGNAL COMPANY
发明人
JEFFERSON GLEN V.
分类号
B61L19/14
主分类号
B61L19/14
代理机构
代理人
主权项
地址
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