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发明名称
Improvements in devices for measuring illumination
摘要
申请公布号
GB871620(A)
申请公布日期
1961.06.28
申请号
GB19570030851
申请日期
1957.10.02
申请人
N.V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
G01J1/42
主分类号
G01J1/42
代理机构
代理人
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