ALEXANDRIA, Va., June 16 -- United States Patent no. 12,307,929, issued on May 20, was assigned to Hitch-Hiker Mfg. Inc. (New Middleton, Ohio).

"Portable food concession trailer" was invented by Jeffrey Mark Swartz (New Middletown, Ohio).

According to the abstract* released by the U.S. Patent & Trademark Office: "A food concession vehicle may include a food processing area, two LED display screens and an adjustment mechanism that can move the LED display screens between a first position where the two screens are coplanar and too high to pass under a bridge and a second position where the two screens are able to pass under a bridge. When in the first position, the two screens may be able to provide a single continuous image."

The patent w...