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经营范围
发明名称
UNBALANCE DETECTION RELAYING SYSTEM
摘要
申请公布号
JPS5214846(A)
申请公布日期
1977.02.04
申请号
JP19750090089
申请日期
1975.07.25
申请人
HITACHI LTD
发明人
MIYAZAKI TERUNOBU
分类号
H02H7/04;H02H3/10;H02H3/36;(IPC1-7):H02H7/04
主分类号
H02H7/04
代理机构
代理人
主权项
地址
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