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经营范围
发明名称
Improvements in or relating to electric lamp reflectors
摘要
申请公布号
GB383194(A)
申请公布日期
1932.11.10
申请号
GB19320012825
申请日期
1932.05.04
申请人
WILLIAM JOHNS
发明人
分类号
F21V1/00
主分类号
F21V1/00
代理机构
代理人
主权项
地址
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