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发明名称
Improvements in or relating to lamps producing beams of light
摘要
申请公布号
GB636966(A)
申请公布日期
1950.05.10
申请号
GB19470023302
申请日期
1947.08.22
申请人
PHILIPS ELECTRICAL LIMITED
发明人
分类号
B60Q1/14;F21V11/16
主分类号
B60Q1/14
代理机构
代理人
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