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经营范围
发明名称
Improvements relating to code communication systems for centralised railway traffic control
摘要
申请公布号
GB717152(A)
申请公布日期
1954.10.20
申请号
GB19520018536
申请日期
1952.07.22
申请人
GENERAL RAILWAY SIGNAL COMPANY
发明人
分类号
B61L7/08
主分类号
B61L7/08
代理机构
代理人
主权项
地址
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