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发明名称
Improvements in and relating to lighting appliances
摘要
申请公布号
GB347571(A)
申请公布日期
1931.04.30
申请号
GB19310001817
申请日期
1930.02.03
申请人
WILLIAM ASBURY DOREY
发明人
分类号
F21S13/00
主分类号
F21S13/00
代理机构
代理人
主权项
地址
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