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发明名称
CHANNEL DROP TYPE OPTICAL FILTER
摘要
申请公布号
JPH04159512(A)
申请公布日期
1992.06.02
申请号
JP19900286135
申请日期
1990.10.24
申请人
NEC CORP
发明人
KATO TOMOAKI
分类号
G02F1/025
主分类号
G02F1/025
代理机构
代理人
主权项
地址
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