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发明名称
Systèmes avertisseurs de signaux de dépassement
摘要
申请公布号
FR828493(A)
申请公布日期
1938.05.18
申请号
FRD828493
申请日期
1937.01.30
申请人
LE MATERIEL TELEPHONIQUE
发明人
分类号
G01H3/12
主分类号
G01H3/12
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