ALEXANDRIA, Va., March 24 -- United States Patent no. 12,583,133, issued on March 24, was assigned to Dexterity Inc. (Redwood City, Calif.).

"Stack pusher" was invented by Matthew Rodolfo Molina (San Francisco), Robert Holmberg (Mountain View, Calif.) and Matthew LaGoy (Redwood City, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present application discloses a robotic stack pusher system, and a method and a computer system for controlling the robotic stack pusher system. The robotic stack pusher system includes an actuation device and a plurality of pusher structures that are substantially planar. At least one of the plurality of pusher structures is nested within one or more other pusher structu...