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发明名称
摘要
申请公布号
FR2039379(A1)
申请公布日期
1971.01.15
申请号
FR19700014207
申请日期
1970.04.20
申请人
RICOH KK
发明人
分类号
H02M7/46;(IPC1-7):H02M5/00;H05G1/00;H03K17/00
主分类号
H02M7/46
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