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发明名称
Dispositif pour transformer des variations de fréquence en variations proportionnelles de courant continu
摘要
申请公布号
FR974047(A)
申请公布日期
1951.02.16
申请号
FRD974047
申请日期
1941.11.25
申请人
UNION D'ELECTRICITE
发明人
CHEVALLIER ANDRE
分类号
G01R23/00
主分类号
G01R23/00
代理机构
代理人
主权项
地址
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