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发明名称
OPTICAL ARRANGEMENTS FOR MAINTAINING A DESIRED CONDITION OF FOCUS OF A LIGHT BEAM
摘要
申请公布号
GB1526333(A)
申请公布日期
1978.09.27
申请号
GB19760006424
申请日期
1976.02.18
申请人
SONY CORP
发明人
分类号
H04N5/85;G02B27/40;G11B7/08;G11B7/09;(IPC1-7):G11B7/00
主分类号
H04N5/85
代理机构
代理人
主权项
地址
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