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发明名称
FOUR-TERMINAL OPTICAL BRANCHING AND COUPLING DEVICE
摘要
申请公布号
JPH02167505(A)
申请公布日期
1990.06.27
申请号
JP19880322344
申请日期
1988.12.21
申请人
NEC CORP
发明人
MORI TATSUO
分类号
G02B6/28
主分类号
G02B6/28
代理机构
代理人
主权项
地址
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