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发明名称
VERWENDUNG VON STAHLGUSS ALS WIRKSTOFF ZUR HERSTELLUNG VON POLMASSEN IN ELEKTRISCHEN MASCHINEN
摘要
申请公布号
DE2203830(B2)
申请公布日期
1977.06.16
申请号
DE19722203830
申请日期
1972.01.27
申请人
发明人
分类号
C22C;C22C38/44;H01F;H02K1/02;H02K5/00;(IPC1-7):C22C38/44
主分类号
C22C
代理机构
代理人
主权项
地址
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