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发明名称
Utilisation d'un courant à fréquence musicale parcourant des installations en courants continu et alternatif
摘要
申请公布号
FR858059(A)
申请公布日期
1940.11.16
申请号
FRD858059
申请日期
1939.04.14
申请人
CHAUVIN ARNOUX & CO
发明人
分类号
H02H3/17
主分类号
H02H3/17
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代理人
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