ALEXANDRIA, Va., June 17 -- United States Patent no. 12,312,865, issued on May 27, was assigned to Werner Co. (Greenville, Pa.).

"Interlocking ladders and components thereof" was invented by Jesus Miguel Gutierrez Garcia (Cd. Juarez Chihuahua, Mexico) and Slavisa Dacic (Hanover Park, Ill.).

According to the abstract* released by the U.S. Patent & Trademark Office: "In some embodiments, an interlocking ladder includes a first rail and a second rail disposed parallel to and adjacent the first rail, with a guide bracket coupled to the first rail. The guide bracket includes a bracket flange portion coupled to the first rail and hooked portion disposed about the second rail. The hooked portion is cantilevered from the bracket flange portion. T...