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发明名称
Improvements in railway code-signalling systems
摘要
申请公布号
GB964553(A)
申请公布日期
1964.07.22
申请号
GB19620019970
申请日期
1962.05.24
申请人
VYZKUMNY USTAV DOPRAVNI
发明人
分类号
B61L3/22
主分类号
B61L3/22
代理机构
代理人
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