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发明名称
摘要
申请公布号
SU562807(A1)
申请公布日期
1977.06.25
申请号
SU19762319625
申请日期
1976.02.04
申请人
发明人
分类号
H02M7/04;(IPC1-7):G05F1/64
主分类号
H02M7/04
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代理人
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