ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,765,738, issued on Oct. 20, was assigned to Diversey Inc. (Fort Mill, S.C.).

"Floor cleaning apparatus" was invented by Thomas Keller (St. Gallen, Switzerland) and Franz Oberhansli (Mosnang, Switzerland).

According to the abstract* released by the U.S. Patent & Trademark Office: "A floor cleaning apparatus includes a cleaning unit and a motor assembly. The cleaning unit includes a left cleaning disc and a right cleaning disc. Each one of the left and right cleaning discs have a respective lower side that cleans the floor and a respective upper side opposite the lower side. The motor assembly operates in rotation the left cleaning disc and the right cleaning disc around a respective a...