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发明名称
Transformateur d'énergie ultra-sonore en énergie électrique à grand pouvoir directionnel
摘要
申请公布号
FR1075640(A)
申请公布日期
1954.10.19
申请号
FRD1075640
申请日期
1953.03.12
申请人
COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL
发明人
分类号
G10K11/32
主分类号
G10K11/32
代理机构
代理人
主权项
地址
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