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发明名称
Système de signalisation
摘要
申请公布号
FR981528(A)
申请公布日期
1951.05.28
申请号
FRD981528
申请日期
1943.04.30
申请人
发明人
MARZIN PIERRE;SUEUR RENE
分类号
H03H7/01
主分类号
H03H7/01
代理机构
代理人
主权项
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