(under the class definition) Inflexible instrumentality having (a) a work face that includes crystalline abrasive particles (e.g., emery, sand, corundum, etc.) and a supporting structure to which such particles are secured or (b) an abrasive containing composition molded to a particular shape.
SEE OR SEARCH THIS CLASS, SUBCLASS:
463+, for an expansible tool.
SEE OR SEARCH CLASS
51, Abrasive Tool Making Process, Material, or Composition, for a rigid abrasive tool distinguished solely by the abrasive composition.
241, Solid Material Comminution or Disintegration,
291+, especially subclasses 293+ for similar elements used in comminution.
