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发明名称
Switch machine for railroads
摘要
申请公布号
US1785698(A)
申请公布日期
1930.12.16
申请号
US19290386307
申请日期
1929.08.16
申请人
GENERAL RAILWAY SIGNAL COMPANY
发明人
HOWE WINTHROP K.
分类号
B61L5/06
主分类号
B61L5/06
代理机构
代理人
主权项
地址
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