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发明名称
Perfectionnements apportés aux lampes portatives alimentées par piles sèches, spécialment adaptées à la signalisation dans les chemins de fer
摘要
申请公布号
FR839882(A)
申请公布日期
1939.04.13
申请号
FRD839882
申请日期
1938.06.27
申请人
发明人
BAGNASCO ANTONIO
分类号
F21L4/00
主分类号
F21L4/00
代理机构
代理人
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