ALEXANDRIA, Va., July 21 -- United States Patent no. 12,687,070, issued on July 21, was assigned to Werner Co. (Itasca, Ill.).

"Ladder feet" was invented by Robert D. Beggs (Stoneboro, Pa.), Thomas W. Parker (Jamestown, Pa.), Steven R. Dings (Mentor, Ohio) and Joseph C. Dangrow (Mercer, Pa.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A ladder includes a foot having a plastic body with a recess which receives the end of a first rail and is positioned about and conforms to the web and the first and second flanges of the first rail. The foot has a plastic base having a top side from which the body extends. The foot has a metal rail fastener which extends through the body and the rail to attach the body and t...