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发明名称
MAGNETIC ATTRACTION DEVICE
摘要
申请公布号
GB1589309(A)
申请公布日期
1981.05.13
申请号
GB19770037497
申请日期
1977.09.08
申请人
ABE S
发明人
分类号
H01F7/02;(IPC1-7):H01F7/02
主分类号
H01F7/02
代理机构
代理人
主权项
地址
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