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经营范围
发明名称
OPTICAL BRANCHING FILTER
摘要
申请公布号
JPS51114948(A)
申请公布日期
1976.10.09
申请号
JP19750039114
申请日期
1975.04.02
申请人
NIPPON TELEGRAPH & TELEPHONE
发明人
TACHIYAMA MITSUHIRO
分类号
G02B5/18;H01P1/20;H01P1/213
主分类号
G02B5/18
代理机构
代理人
主权项
地址
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