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发明名称
Improvements in electric interlocking systems for railway signalling apparatus
摘要
申请公布号
GB492301(A)
申请公布日期
1938.09.19
申请号
GB19370008007
申请日期
1937.03.18
申请人
WESTINGHOUSE BRAKE & SIGNAL COMPANY LIMITED
发明人
分类号
B61L19/06
主分类号
B61L19/06
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代理人
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