(under subclass 107.1) Invention comprising stock material for, or method of, making a tool intended to turn about an axis and cut a workpiece by relative rotation and relative axial movement therewith.
(1) Note. Including herein the making of a metal cutting, wood cutting, or stone cutting drill.
SEE OR SEARCH CLASS
175, Boring or Penetrating the Earth,
374+, and 425+ for an earth boring bit made of specific material.
409, Gear Cutting, Milling or Planing,
66, for a process of milling a thread or helix on a workpiece, such as in making a drill bit, wherein the operation is not restricted to making of a tool. 451, Abrading,
48, for a process of abrading a drill, including forming a drill bit by abrading only.
