ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,461,536, issued on Nov. 4, was assigned to TESSERACT VENTURES LLC (Overland Park, Kan.).

"Personal robot" was invented by John Boucard (Overland Park, Kan.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A robot assembly operable to couple to one or more accessories including a housing coupled with two wheels and at least one electric motor operably coupled with the plurality of wheels. A navigation system can have one or more sensors operably disposed within the housing and the navigation system can be operable to receive data from the one or more sensors and communicatively couple with the at least one electric motor."

The patent was filed on April 23,...