ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,429,248, issued on Sept. 30, was assigned to TRANE INTERNATIONAL INC. (Davidson, N.C.).

"Air handling unit" was invented by Christopher Daniel (Clarksville, Tenn.), Jason William Parks (Clarksville, Tenn.), Gregory L. Meeuwsen (West Salem, Wis.), Nathan Wagers (Panama City, Fla.), Chasity Webb (Panama City, Fla.), Anthony Chiles (Hopkinsville, Ky.), Gregory Edmund Beltran (Nashville, Tenn.), Aaron Allison Stevens (Spring Hill, Tenn.), Stephen Kowalski (Clarksville, Tenn.) and Jason Harpst (Clarksville, Tenn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An air handling unit (AHU) for a heating, ventilation, air conditioning, and refrigeration (HVACR) ...