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发明名称
Dispositif de signalisation ultra-sonore
摘要
申请公布号
FR1065838(A)
申请公布日期
1954.05.31
申请号
FRD1065838
申请日期
1952.11.03
申请人
发明人
PAUTRAT LOUIS-OCTAVE-LUCIEN;MERIGNAC HENRI
分类号
G10K5/02
主分类号
G10K5/02
代理机构
代理人
主权项
地址
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