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发明名称
SECURITY SYSTEM
摘要
申请公布号
GB1212614(A)
申请公布日期
1970.11.18
申请号
GB19680039815
申请日期
1968.08.20
申请人
BRITISH RAILWAYS BOARD
发明人
CYRIL MASKERY
分类号
G08B13/08
主分类号
G08B13/08
代理机构
代理人
主权项
地址
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