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经营范围
发明名称
Improvements in and relating to electric lighting units
摘要
申请公布号
GB807652(A)
申请公布日期
1959.01.21
申请号
GB19550037442
申请日期
1955.12.30
申请人
JESSE BULL
发明人
分类号
F21V23/02
主分类号
F21V23/02
代理机构
代理人
主权项
地址
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