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发明名称
UNDERFREQUENCY RELAY
摘要
申请公布号
US3558911(A)
申请公布日期
1971.01.26
申请号
USD3558911
申请日期
1969.05.29
申请人
GENERAL ELECTRIC CO.
发明人
MUCHUAN M. CHEN
分类号
G01R23/00;G01R23/15;H01H51/32;H02H3/46;(IPC1-7):H01H35/00
主分类号
G01R23/00
代理机构
代理人
主权项
地址
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