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发明名称
Perfectionnements apportés aux procédés et appareils pour mesurer ou comparer des fonctions périodiques, notamment pour la protection sélective des réseaux
摘要
申请公布号
FR56078(E)
申请公布日期
1952.09.12
申请号
FRD56078
申请日期
1945.11.20
申请人
UNION D'ELECTRICITE
发明人
分类号
H02H3/30
主分类号
H02H3/30
代理机构
代理人
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