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发明名称
Perfectionnements aux lampes électriques de poche
摘要
申请公布号
FR768641(A)
申请公布日期
1934.08.10
申请号
FRD768641
申请日期
1933.05.03
申请人
发明人
DINET ARMAND
分类号
F21L4/00
主分类号
F21L4/00
代理机构
代理人
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