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经营范围
发明名称
VARIABLE WAVELENGTH FILTER
摘要
申请公布号
JPH04178613(A)
申请公布日期
1992.06.25
申请号
JP19900307641
申请日期
1990.11.14
申请人
NEC CORP
发明人
KOGA YUJI
分类号
G02F1/01;G02F1/025;G02F1/313
主分类号
G02F1/01
代理机构
代理人
主权项
地址
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