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经营范围
发明名称
Improvements in and relating to circuit arrangements for maintaining constant voltage
摘要
申请公布号
GB347094(A)
申请公布日期
1931.04.13
申请号
GB19290034575
申请日期
1929.11.12
申请人
LASZLO KOROS
发明人
分类号
G05F1/52
主分类号
G05F1/52
代理机构
代理人
主权项
地址
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