ALEXANDRIA, Va., July 21 -- United States Patent no. 12,686,561, issued on July 21, was assigned to Ocado Innovation Ltd. (Hatfield, Great Britain).

"Grid levelling mechanism" was invented by Oliver Kirkby (Hatfield, Great Britain), Benjamin Arthur Portnoy Noar (Hatfield, Great Britain), Andrew Ingram-Tedd (Hatfield, Great Britain), Stephen Millward (Hatfield, Great Britain) and Leslie Wynn (Hatfield, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "A grid framework structure configured to support one or more load handling devices includes a grid structure including a first set of grid members extending in a first direction and a second set of grid members extending in a second direction, the sec...