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US07671712B2 Levitation of objects using magnetic force 失效
使用磁力对物体进行悬浮

Levitation of objects using magnetic force
Abstract:
The invention disclosed is a method of levitating one or both ends of an object permanently or temporarily, or altering the distance between two objects or the momentum of an object by manipulating the direction of the magnetic field of a permanent or electromagnet.
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