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发明名称
Procédé de signalisation
摘要
申请公布号
FR679437(A)
申请公布日期
1930.04.12
申请号
FRD679437
申请日期
1929.07.27
申请人
发明人
OSSUL PEDRO
分类号
G08G1/09
主分类号
G08G1/09
代理机构
代理人
主权项
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