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经营范围
发明名称
OPTICAL SWITCH
摘要
申请公布号
JPH05249506(A)
申请公布日期
1993.09.28
申请号
JP19920049331
申请日期
1992.03.06
申请人
NIPPON TELEGR & TELEPH CORP <NTT>
发明人
KODA SHIGETO;TSURU SHINJI
分类号
G02F1/31;G02F1/13;(IPC1-7):G02F1/31
主分类号
G02F1/31
代理机构
代理人
主权项
地址
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