(under subclass 231) Process which includes a step for magnetic separation.
SEE OR SEARCH CLASS
209, Classifying, Separating, and Assorting Solids,
12+, for combined operations including the use of magnetic operations; subclasses 509+ for sorting special items, and certain methods and apparatus some of which use magnetic properties and note subclasses 212 through 232 for magnetic separation, per se (Class 588 provides for the magnetic separation of any hazardous or toxic waste in combination with the destruction of the waste).
