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经营范围
发明名称
OPTICAL CROSSBAR SWITCH
摘要
申请公布号
GB9010692(D0)
申请公布日期
1990.07.04
申请号
GB19900010692
申请日期
1990.05.12
申请人
STC PLC
发明人
分类号
H04Q3/52
主分类号
H04Q3/52
代理机构
代理人
主权项
地址
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