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发明名称
ANVENDELSE AV STOFF SOM ELEKTROMAGNETISK AKTIVT MATERIALE.
摘要
申请公布号
NO871336(D0)
申请公布日期
1987.03.31
申请号
NO19870001336
申请日期
1987.03.31
申请人
PETROLEUM RECOVERY CONSULTANTS A/S
发明人
JOHANSEN, HANS KONRAD
分类号
H01F;(IPC1-7):H01F/
主分类号
H01F
代理机构
代理人
主权项
地址
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