ALEXANDRIA, Va., Feb. 5 -- United States Patent no. 12,215,547, issued on Feb. 4, was assigned to LITTLE GIANT LADDER SYSTEMS LLC (Springville, Utah).

"Ladders, rung assemblies for ladders and related methods" was invented by Christian Smith (Highland, Utah), Benjamin Cook (Provo, Utah), Sean Peterson (Payson, Utah), Brian Russell (Saratoga Springs, Utah), N. Ryan Moss (Mapleton, Utah), Bryan Wright (Highland, Utah) and Gary Jonas (Springville, Utah).

According to the abstract* released by the U.S. Patent & Trademark Office: "Ladders and ladder components are provided including a rung assembly that provides an alert to a user of the ladder that they are standing on a particular rung or step. In one example, the lower most rung or step of ...