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发明名称
Improvements relating to railway signalling systems
摘要
申请公布号
GB493863(A)
申请公布日期
1938.10.17
申请号
GB19370010815
申请日期
1937.04.15
申请人
WESTINGHOUSE BRAKE & SIGNAL COMPANY LIMITED
发明人
分类号
B61L23/16
主分类号
B61L23/16
代理机构
代理人
主权项
地址
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