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发明名称
Improvements in interlocking machines for railways
摘要
申请公布号
GB354973(A)
申请公布日期
1931.08.20
申请号
GB19300021692
申请日期
1930.07.17
申请人
GENERAL RAILWAY SIGNAL COMPANY
发明人
分类号
B61L19/14
主分类号
B61L19/14
代理机构
代理人
主权项
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