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发明名称
Track switch for railroads
摘要
申请公布号
US2324622(A)
申请公布日期
1943.07.20
申请号
US19420428733
申请日期
1942.01.29
申请人
GENERAL RAILWAY SIGNAL COMPANY
发明人
HEWES RALPH W.
分类号
B61L5/02
主分类号
B61L5/02
代理机构
代理人
主权项
地址
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