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发明名称
Improvement in electric ceiling roses
摘要
申请公布号
GB329791(A)
申请公布日期
1930.05.29
申请号
GB19290012665
申请日期
1929.04.24
申请人
RUDOLF NETTL
发明人
分类号
F21V21/02
主分类号
F21V21/02
代理机构
代理人
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