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发明名称
AUDIO SAFETY SYSTEM SUITABLE FOR LONDON TRANSPORT BRITISH RAIL SLIDING DOORS
摘要
申请公布号
GB9015812(D0)
申请公布日期
1990.09.05
申请号
GB19900015812
申请日期
1990.07.18
申请人
BENTALL, JOHN C
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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