ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,504,193, issued on Dec. 23, was assigned to Broan-NuTone LLC (Hartford, Wis.).

"System for adjusting humidity levels within an environment" was invented by Richard R. Sinur (Hartford, Wis.), Jason Asmus (Hartford, Wis.), James D. Bohn (Hartford, Wis.), Seddik Rougab (Hartford, Wis.), Ryan Revers (Hartford, Wis.) and Moataz Khalil (Hartford, Wis.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An indoor air quality system is configured to improve indoor air quality conditions within a local environment of a building. The indoor air quality system operates according to a method that includes obtaining indoor air levels and operating one or more appliances ...