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发明名称
ND FILTER
摘要
申请公布号
JPH1144802(A)
申请公布日期
1999.02.16
申请号
JP19970201904
申请日期
1997.07.28
申请人
ASAHI SEIMITSU KK
发明人
YAMAGATA MASAKAZU
分类号
G02B5/00;(IPC1-7):G02B5/00
主分类号
G02B5/00
代理机构
代理人
主权项
地址
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