ALEXANDRIA, Va., July 7 -- United States Patent no. 12,672,990, issued on July 7, was assigned to Stryker Corp. (Portage, Mich.).

"Patient transport apparatus with ski assemblies" was invented by Shawn Trimble (Portage, Mich.), Christopher Gentile (Sturgis, Mich.) and Joshua Buck (Grand Rapids, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A patient transport apparatus with a seat assembly to support a patient. A rear assembly pivots between first and second rear positions, and a stair rear position. A ski is selectively pivotable relative to the rear assembly between a plurality of ski positions. A carrier is coupled between the rear assembly and the ski and is operable between: an unlocked state whe...