ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,722,253, issued on Sept. 1.
"Tool sharpening system" was invented by David Moroz (Lymon, S.C.).
According to the abstract* released by the U.S. Patent & Trademark Office: "An angle reference block including a series of angled end surfaces. Slots disposed in the body of said angle reference block, wherein each of said slots includes a stop member that extends upward from a bottom of the slot a given distance that is associated with a specific angle set point. A key being receivable in said slots to adjust the angle associated with said angled end surfaces, wherein each said slot designates a predefine angle for adjusting the angled end surfaces to a desired set angle when said key is ...