ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,455,061, issued on Oct. 28, was assigned to Emergency Technology Inc. (Hudsonville, Mich.).

"Heated illumination assembly" was invented by William S. Buehler (Hudsonville, Mich.), Patrick James Eiswerth (Grand Rapids, Mich.), Weston Harness (Hudsonville, Mich.), Heather M. Meerman (Conklin, Mich.) and Douglas V. Baker (Hudsonville, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A heated illumination assembly includes a light transmissive lens cover defining a first region and a second region. A first heater member having a first electrical resistance is disposed in the first region, and a second heater member having a second electrical resistance ...