ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,487,601, issued on Dec. 2, was assigned to HUSQVARNA AB (Huskvarna, Sweden).

"Robotic work tool system, and method for defining a working area perimeter" was invented by Daniel Wikestad (Hestra, Sweden), Ulf Arlig (Bankeryd, Sweden) and Anton Martensson (Jonkoping, Sweden).

According to the abstract* released by the U.S. Patent & Trademark Office: "A robotic work tool system (200) for defining a working area perimeter (105) surrounding a working area (150) in which a robotic work tool (100) is intended to operate. The robotic work tool system (200) comprises a boundary definition unit (300) comprising at least one position unit (175) for receiving position data; and at least one contr...