ALEXANDRIA, Va., June 4 -- United States Patent no. 12,319,233, issued on June 3, was assigned to EM SIL Enterprises Inc. (Pompano Beach, Fla.).

"Sub-frame and step assembly for truck" was invented by Michael John Silveri (Boca Raton, Fla.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An assembly is described for connecting a step or other components to a tow truck or other commercial truck using a sub-frame. The sub-frame includes chassis connection elements that are attached to a chassis of the truck and support elements that extend perpendicularly away from the chassis toward left and right sides of the truck so that the step, a toolbox, or other components may be attached thereto. The step is installed ...