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发明名称
OPTICAL SWITCH
摘要
申请公布号
GB8519528(D0)
申请公布日期
1985.09.11
申请号
GB19850019528
申请日期
1985.08.02
申请人
BRITISH PETROLEUM CO 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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