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经营范围
发明名称
Improvements in or relating to portable electric battery lamps
摘要
申请公布号
GB435908(A)
申请公布日期
1935.10.01
申请号
GB19350003340
申请日期
1935.02.01
申请人
RUEBEN DIGHT
发明人
分类号
F21L4/00
主分类号
F21L4/00
代理机构
代理人
主权项
地址
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