ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,439,849, issued on Oct. 14, was assigned to TECHTRONIC CORDLESS GP (Anderson, S.C.).

"Power tool having a variable height or speed" was invented by William E. Colber (Lavonia, Ga.), Dayu Feng (Seneca, S.C.), James C. Ferrell (Elberton, Ga.), Jonathan R. Feldkamp (Anderson, S.C.) and Dongyu Wang (Hendersonville, Tenn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A power tool may have features for varying height or speed. The power tool may include a base chassis, one or more wheels mounted to the base chassis, and a handle frame attached to the base chassis. A slider assembly or support rail may further be included with the power tool to, for instance,...