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经营范围
发明名称
TRACK OCCUPATION WARNING SYSTEM
摘要
申请公布号
GB9127459(D0)
申请公布日期
1992.02.19
申请号
GB19910027459
申请日期
1991.12.28
申请人
BRITISH RAILWAYS BOARD
发明人
分类号
B61L29/22
主分类号
B61L29/22
代理机构
代理人
主权项
地址
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