发明授权
US5691683A Multi-pole composite magnet 失效
多极复合磁体

Multi-pole composite magnet
摘要:
The composite magnet comprises two sections, each section having a plurality of projections and apertures. The projections and apertures on a first section mate with the apertures and projections, respectively, on the second section. The first and second sections are magnetized in opposite axial directions.
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