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发明名称
Switch point indicator for railway traffic controlling system control panels
摘要
申请公布号
US2967233(A)
申请公布日期
1961.01.03
申请号
US19570647678
申请日期
1957.03.21
申请人
GENERAL RAILWAY SIGNAL COMPANY
发明人
JACKSON CARLTON T.
分类号
B61L25/08
主分类号
B61L25/08
代理机构
代理人
主权项
地址
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