ALEXANDRIA, Va., July 9 -- United States Patent no. 12,349,621, issued on July 8, was assigned to Briggs & Stratton LLC (Wauwatosa, Wis.).

"Zero turn radius mower with cutting blade control" was invented by Jeffrey Zeiler (Pewaukee, Wis.) and Robert J. Koenen (Pewaukee, Wis.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A ZTR mower includes a pair of rear drive wheels, a mowing deck including multiple cutting blades, an electric storage battery, a pair of electric wheel motors each configured to rotate one of the rear drive wheels, multiple electric blade motors each configured to rotate one of the multiple cutting blades, and a master controller in communication with each of the pair of wheel motors and th...