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发明名称
Improvements in luminaires and refractors therefor
摘要
申请公布号
GB618395(A)
申请公布日期
1949.02.21
申请号
GB19460032597
申请日期
1946.11.02
申请人
HOLOPHONE COMPANY
发明人
分类号
F21V5/00
主分类号
F21V5/00
代理机构
代理人
主权项
地址
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