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发明名称
Improvements in or relating to train control systems
摘要
申请公布号
GB355337(A)
申请公布日期
1931.08.24
申请号
GB19300015805
申请日期
1930.05.22
申请人
ASSOCIATED TELEPHONE & TELEGRAPH COMPANY
发明人
分类号
B61L3/12
主分类号
B61L3/12
代理机构
代理人
主权项
地址
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