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发明名称
Improvements in electric incandescent lamps
摘要
申请公布号
GB497587(A)
申请公布日期
1938.12.19
申请号
GB19370017081
申请日期
1937.06.18
申请人
WILHELM ROEVER
发明人
分类号
F21V11/00;H01K1/14
主分类号
F21V11/00
代理机构
代理人
主权项
地址
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