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发明名称
Optischer Filter-Einstellungsapparat und optisches Filter-Verfahren.
摘要
申请公布号
DE69006748(D1)
申请公布日期
1994.03.31
申请号
DE19906006748
申请日期
1990.01.12
申请人
BRITISH TELECOMMUNICATIONS P.L.C., LONDON, GB
发明人
PRESTON, KEITH ROBERT, WOODBRIDGE, SUFFOLK, IP12 1LF, GB
分类号
G02B6/28;G02B6/293;G02B6/34;G02B26/00;(IPC1-7):G02B6/34
主分类号
G02B6/28
代理机构
代理人
主权项
地址
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