ALEXANDRIA, Va., Aug. 6 -- United States Patent no. 12,377,922, issued on Aug. 5, was assigned to New Heights LLC (Leola, Pa.).

"Self-propelled tandem axle trailer" was invented by Aaron Jay Beiler (Gap, Pa.), William Fisher (Paradise, Pa.), Raymond Beiler (New Holland, Pa.) and Jeremiah Weaver (Narvon, Pa.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A trailer for towing by a power vehicle is provided and generally includes a frame and a tandem wheel assembly. The frame forms an undercarriage chassis and the tandem wheel assembly positioned under the undercarriage chassis. The tandem wheel assembly includes a rear wheel assembly and a front wheel assembly. An extension assembly is provided and moves the f...