Patent 8356400 was granted and assigned to Correlated Magnetics Research on January, 2013 by the United States Patent and Trademark Office.
An improved method for manufacturing a field emission structure is provided that involves receiving magnets from a magnet supplying device and placing each one of the magnets at a corresponding location of a plurality of location of the field emission structure. The corresponding location and a corresponding orientation of each of the magnets relative to each other are defined in accordance with a code.