ALEXANDRIA, Va., June 9 -- United States Patent no. 12,287,123, issued on April 29.

"Reversible air deflector and ventilation system" was invented by Krzysztof Bruzi (Dobrzyca, Poland) and Renata Bruzi (Dobrzyca, Poland).

According to the abstract* released by the U.S. Patent & Trademark Office: "A two-part reversible air deflector for reversing the flow direction of air pumped by a radial fan with constant rotation direction and a ventilation system formed of ventilation installations with use of reversible air deflectors, wherein the air deflector is divided into the suction-inlet body and the separate compression-outlet body, each of them having the frontal through opening surrounded with an annular protrusion wherein both bodies and o...