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经营范围
发明名称
MULTICHANNEL OPTICAL SWITCH
摘要
申请公布号
JPH0455832(A)
申请公布日期
1992.02.24
申请号
JP19900166341
申请日期
1990.06.25
申请人
NIPPON TELEGR & TELEPH CORP <NTT>
发明人
HOKARI KAZUO
分类号
G02F1/31
主分类号
G02F1/31
代理机构
代理人
主权项
地址
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