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发明名称
OPTICAL SYSTEM
摘要
申请公布号
GB9317550(D0)
申请公布日期
1993.10.06
申请号
GB19930017550
申请日期
1993.08.24
申请人
BRITISH TELECOMMUNICATIONS PLC
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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