ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,729,879, issued on Sept. 8, was assigned to A. O. Smith Corp. (Milwaukee).

"Tank water heater and water heating system" was invented by Jianmin Yin (Pewaukee, Wis.) and Stephen Memory (Menomonee Falls, Wis.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A water heater includes first and second cylindrical tank portions, a water outlet stub, and a connecting pipe. The first cylindrical tank portion is capped by a first domed head at a first end of the first cylindrical tank portion and a second domed head at a second end of the first cylindrical tank portion. The water outlet stub is connected to the first domed head. The second cylindrical tank portion ...