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经营范围
发明名称
ALARM INDICATOR SYSTEMS
摘要
申请公布号
GB1506387(A)
申请公布日期
1978.04.05
申请号
GB19740014060
申请日期
1975.04.02
申请人
BRITISH RAILWAYS BOARD
发明人
分类号
G08B19/00;(IPC1-7):G08B19/00
主分类号
G08B19/00
代理机构
代理人
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地址
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