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发明名称
Procédé d'avertissement sonore et dispositif pour la mise en oeuvre de ce procédé
摘要
申请公布号
FR1021432(A)
申请公布日期
1953.02.18
申请号
FRD1021432
申请日期
1950.06.30
申请人
LA CONSTRUCTION RADIOELECTRIQUE
发明人
分类号
G10K1/063
主分类号
G10K1/063
代理机构
代理人
主权项
地址
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