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经营范围
发明名称
Improvements in electric torches
摘要
申请公布号
GB366757(A)
申请公布日期
1932.02.11
申请号
GB19310007062
申请日期
1931.03.06
申请人
ELEKTROTECHNISCHE FABRIK SCHMIDT & CO., G.M.B.H.
发明人
分类号
F21L4/00
主分类号
F21L4/00
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