ALEXANDRIA, Va., July 7 -- United States Patent no. 12,674,598, issued on July 7, was assigned to Weiss Technik North America Inc. (Grand Rapids, Mich.).

"Environmental conditioning equipment" was invented by Dwayne Botruff (Byron Center, Mich.), Lew Huguelet (Wyoming, Mich.), Sean McKendry (Alto, Mich.) and Michael Stratton (Kentwood, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An environmental conditioning equipment having a chamber, and method of directing fluid through the chamber, includes a chamber, a plenum and an air-moving apparatus for directing air into said chamber via the plenum, and a duct. The duct is formed from a base wall and opposed side walls forming two sides of the duct. Each o...