ALEXANDRIA, Va., June 16 -- United States Patent no. 12,305,878, issued on May 20, was assigned to Envola GmbH (Ulm, Germany).
"System for air conditioning the interior of a building that guides exhaust air into a fluid reservoir via a heat exchanger" was invented by Alexander Schechner (Ulm, Germany), Gerhard Ihle (Ulm, Germany) and Islam Elhelaly (Neu-Ulm, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "In a system for air conditioning interior spaces of a building which are connected via at least one exhaust air duct, one or more interior spaces are provided with an air conditioner which has a inlet line of outdoor air, which supplies inlet air or circulating air to the interior space or spaces, an...