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发明名称
UMKEHRBARER STROMRICHTER
摘要
申请公布号
DE1912455(B2)
申请公布日期
1971.12.23
申请号
DE19691912455
申请日期
1969.03.12
申请人
发明人
分类号
H02M7/155;H02M7/757;H02P7/292
主分类号
H02M7/155
代理机构
代理人
主权项
地址
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